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Need good alignment specs*** UPDATE*** #275627
04/02/09 11:35 PM
04/02/09 11:35 PM
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the boonies
aarcuda Offline OP
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For street and strip. I cant find my specs that i use for my cuda and its been over 10 years since its been aligned.

i thought it was something like 2 or 3 negative camber and 1/8" toe in.

anyone have some good numbers for a mixture of curves and straights?

im getting it aligned tomorrow

Re: Need good alignment specs [Re: aarcuda] #275628
04/02/09 11:47 PM
04/02/09 11:47 PM
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So Cal
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Quote:

For street and strip. I cant find my specs that i use for my cuda and its been over 10 years since its been aligned.

i thought it was something like 2 or 3 negative camber and 1/8" toe in.

anyone have some good numbers for a mixture of curves and straights?

im getting it aligned tomorrow




As much caster as you can get up to about 5 degrees positive

.5 to .75 negative camber with radial.

1/16 toe in.

Re: Need good alignment specs [Re: aarcuda] #275629
04/02/09 11:47 PM
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RapidRobert Offline
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I set my ride height ahead of time after once it came back too low, 0 camber, as much positive caster as they could get(but the same amt on each side) forgot the toe in but iirc 1/16" to 1/8", all with my weight in barbells in the drivers seat after I get there, the tire psi where I want it, a half tank of gas, also told him to tighten the uca cam bolts TIGHT when he's done(the 65 lbs spec is too low) & a $20 tip for him to get it where I want it. My 65 dart tracks perfect


live every 24 hour block of time like it's your last day on earth
Re: Need good alignment specs [Re: RapidRobert] #275630
04/02/09 11:53 PM
04/02/09 11:53 PM
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probably should mention that ive got the Stage Three Firm Feel kit in my Fast Ratio TA power steering box right now and the steering is plenty stiff

Re: Need good alignment specs [Re: aarcuda] #275631
04/03/09 12:46 AM
04/03/09 12:46 AM
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Quote:

probably should mention that ive got the Stage Three Firm Feel kit in my Fast Ratio TA power steering box right now and the steering is plenty stiff




The increased caster will help the high spead stability and return to center effect. Steering ratio and/or box firmness will not do that.

Just to note, the fast ratio arm itself will add stiffness/less boost effect because of the leverage of the longer arm. That's on top of the decreased boost of a Stage 1,2,3 that comes from the changing the reaction springs in the steering box internals.

Last edited by autoxcuda; 04/03/09 11:39 AM.
Re: Need good alignment specs [Re: autoxcuda] #275632
04/03/09 08:21 AM
04/03/09 08:21 AM
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aarcuda Offline OP
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well im going to do it. it will be nice to have my steering wheel point straight ahead again

Re: Need good alignment specs [Re: aarcuda] #275633
04/04/09 10:24 AM
04/04/09 10:24 AM
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well i got it aligned but im not to happy with the results.

Before it was really screwed up

caster -1.7 1.2
camber -.7 -.6
toe .25" .15"

After measurments were the best compromise

caster 2.5 3.2
camber .2 .2
toe .15" .10"

I was driving it home and on a back road the steering wheel and column was JUMPING up and down pretty several every now and then.

He couldnt give me any negative camber without screwing up the positive caster.

so, WHY was the steering wheel JUMPING?

If the spec says 1/16" toe, is that per wheel? or total between the two? it seems like .15" LEFT and .10" RIGHT would be .25" toe. is it?

Do I need tubular control arms to get this right?

I want the best cornering and the best straight away and best high speed stability.

Re: Need good alignment specs [Re: aarcuda] #275634
04/04/09 10:29 AM
04/04/09 10:29 AM
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Kirkland, Washington
Pacnorthcuda Offline
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The way you list the toe would lead me to believe you have .25 which is way too much. Toe is usually expressed as a single number, and yes its the relationship of one wheel to the other.
You now have postive camber.....hummmmm. I would have sacrificed whatever amount of caster was required to get you to 0 camber.
Rather that new UCA's the Moog offset bushings will remedy the problem nicely.
Jumping up and down.....not sure---maybe the excessive toe????

Re: Need good alignment specs [Re: aarcuda] #275635
04/04/09 12:13 PM
04/04/09 12:13 PM
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dirtybee Offline
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you really should have specified that caster be equal on each side not just as much as possible. my last alignment was like that and i was really unhappy with the way it tracked and handled. better to have 1.5 caster per side than more but unequal. i bet you can't let go of the wheel on a straightaway without the car drifting.

Re: Need good alignment specs [Re: dirtybee] #275636
04/04/09 12:19 PM
04/04/09 12:19 PM
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Cincinnati, OH
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unequal caster will cause a car to pull and "follow" the road differently on one side vs the other...

I would want to see the caster the same on both sides.

Also, I forget the convention but the camber you want is with the wheel pointed slightly outward (ie so it wares the inside of the tire - I think this is right...

Re: Need good alignment specs [Re: Pacnorthcuda] #275637
04/04/09 06:39 PM
04/04/09 06:39 PM
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Quote:

The way you list the toe would lead me to believe you have .25 which is way too much. Toe is usually expressed as a single number, and yes its the relationship of one wheel to the other.
You now have postive camber.....hummmmm. I would have sacrificed whatever amount of caster was required to get you to 0 camber.
Rather that new UCA's the Moog offset bushings will remedy the problem nicely.
Jumping up and down.....not sure---maybe the excessive toe????




He took what you wanted to literally. Or he didn't understand the concepts enough to know the order of importance and minimum levels of the specs/requests you asked him.

I think you might need to find a better alignment shop. That or something is really lacking in communication.

-Adjust the caster to the greatest amount with rear cam adjuster all the way inward and front all the way outward.
-Then bring in front adjuster to get to at least 0 or .25 negative camber.
-Then do the same for the other side.
-Then go to the side with the most caster and adjust the front cam adj. inward so the caster is about halfway toward the other side's number.
-Then adjust the rear cam adj. out enough to get the camber match other other side.

That should get you pretty close. Then you have to go back and forth with the front a rear adjuster to get the camber and caster to match the other side.

The camber should be a minimum of 0 or .25 NEGATIVE (top of tire in).

The reason it pulled before is that the car had cross caster. One side was negative (-1.7) and the other side was positive (1.2).

Re: Need good alignment specs [Re: RapidRobert] #275638
04/04/09 10:51 PM
04/04/09 10:51 PM
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Quote:

I set my ride height ahead of time after once it came back too low, 0 camber, as much positive caster as they could get(but the same amt on each side) forgot the toe in but iirc 1/16" to 1/8", all with my weight in barbells in the drivers seat after I get there, the tire psi where I want it, a half tank of gas, also told him to tighten the uca cam bolts TIGHT when he's done(the 65 lbs spec is too low) & a $20 tip for him to get it where I want it. My 65 dart tracks perfect



If I cannot do it, I ask the alignment guy what the first step to a Mopar torsion bar suspension alignment is. If he doesn't say set ride height, I move on.
There used to be the disclaimer: torsion bar suspensions extra on alignment prices because of the extra step.

Craig


2014 Ram 1500 Laramie, 73 Cuda
Previous mopars: 62 Valiant, 65 Fury III, 68 Fury III, 72 Satellite, 74 Satellite, 89 Acclaim, 98 Caravan, 2003 Durango
Only previous Non-Mopar: Schwinn Tornado
Re: Need good alignment specs [Re: denfireguy] #275639
04/04/09 10:59 PM
04/04/09 10:59 PM
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Quote:

If I cannot do it, I ask the alignment guy what the first step to a Mopar torsion bar suspension alignment is. If he doesn't say set ride height, I move on.
There used to be the disclaimer: torsion bar suspensions extra on alignment prices because of the extra step.




Alignments can be done properly at different ride heights. Mopar was the only one that allowed a height adjustment. Granted mopar has specs with ride height setting to make bump steer a minimum.
As far as ride height goes all cars should be adjusted at the factory recommended height. I always made sure the right to left was even and the car was not nosed up or down at a bad angle.

Re: Need good alignment specs [Re: autoxcuda] #275640
04/04/09 11:20 PM
04/04/09 11:20 PM
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RTDaddy Offline
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I assume you are using teh degree plate to measure the degree of turn on the wheels as you measure caster. Wha degree are you turning to? 20 degree? 30 degree? I would be interested in knowing this. Thanks.

"IF YOU'RE UNDER CONTROL, YOU AIN'T GOING FAST ENOUGH."

Re: Need good alignment specs [Re: RTDaddy] #275641
04/05/09 02:45 AM
04/05/09 02:45 AM
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Quote:

I assume you are using teh degree plate to measure the degree of turn on the wheels as you measure caster. Wha degree are you turning to? 20 degree? 30 degree? I would be interested in knowing this. Thanks.

"IF YOU'RE UNDER CONTROL, YOU AIN'T GOING FAST ENOUGH."




If you are doing it on some sort of modern alignment rack the machine will tell you the angle or set point.

A Longacre caster camber gauge can use a degree plate, but there is also an angle machined on the edge of the gauge. You turn the wheel until the angle is paralell to the car. OR mark the rotations on the steering wheel (tape mark on wheel) and make sure the wheel is turned the same exact amount both ways from center.

Re: Need good alignment specs*** UPDATE*** [Re: aarcuda] #275642
04/05/09 09:34 AM
04/05/09 09:34 AM
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I am installing Bondo Bob upper arms on my challenger this weekend.

Setting up with a magnetic longacre caster camber guage.

I first set he ride height. I use the adjusting screw on each lower control arm to set not only the front ride height, but this adjustment will even out the rear ride height as well. Note: the screws are no where to equeal on each side, at least 10 threads different left to right. perhaps due to hex socket on torsion bar not welded to frame clocked even?

I set he camber on both front wheels to about -.625 deg. with the front end pushed down. If the front end of the car is lifted up to rest I get -.375 deg. camber. if I jack the car up 1" to simulate running down the track, camber is about 0.

Testing the caster drivers side reads +3.5 deg
passenger side reads +7.5 deg .I set the Bondo bob arms with 4 threads showing on the front heim a no threads showing on the rear heim.
I am going to have to adjust the passenger side heim joints on the upper arm to try to match the drivers side 3.5 deg positive setting.

I highly recomend a longacre type guage.

Re: Need good alignment specs*** UPDATE*** [Re: ToddP] #275643
04/05/09 10:22 AM
04/05/09 10:22 AM
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Cincinnati, OH
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Quote:



I highly recomend a longacre type guage.




How do you use this gauge, I can not see a good way to attach it to the wheel? Most wheels do not have a machined flat serface to attach the gauge to...

What do you guys do...

I bought the Fasxtracks one with the 3 arms that contact the rim edge...

Re: Need good alignment specs*** UPDATE*** [Re: 6T6Cuda] #275644
04/05/09 11:10 AM
04/05/09 11:10 AM
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BROOK PARK, OH
WILD BILL Offline
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aarcuda, Where do you live?

If your close enough I'll set the car up for ya.

Re: Need good alignment specs*** UPDATE*** [Re: 6T6Cuda] #275645
04/05/09 12:18 PM
04/05/09 12:18 PM
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Milwaukee
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I take the press on cap off, the cotter pin off and the cotter pin retainer off. the magnetic base then rests on the brake rotor. I had to use a shorter head on the bolt that holds the magnetic base to the guage.



Re: Need good alignment specs*** UPDATE*** [Re: WILD BILL] #275646
04/05/09 09:08 PM
04/05/09 09:08 PM
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the boonies
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Quote:

aarcuda, Where do you live?

If your close enough I'll set the car up for ya.





not very close. im in Arkansas.

my alignment guy isnt a a total idiot. he tried to get me what I asked for. but said that if he adjusts the canmber to negative, my caster goes all to hell. then we talked about what he could get me for camber if he set the caster to 2.5/3.5 and let me know that I'd be at positive camber.
me, not knowing anything said go ahead and go for as much - camber yu could at 2.5/3.5 and thats what he did.

if i'd have known the -camber was that important, i could have had him set it there. i'll also ask [Edited by Moparts - Keep it clean] is up with the toe numbers and get them straightened out

I'll take the car back there and have him try that. he's giving me a buddy deal so its not costing all that much.

the good news is that the car seems to drive fine. i guess that jumping i felt in the wheel must have been the road cause i havent felt it again. I drove a good 100 miles or so this weekend and ran it down the track and it felt fine in the corners (although i did squeek a little doing some cornering at faster than normal speed- i guess thats the + camber coming back to haunt me) and it felt fine at the drag strip.

Re: Need good alignment specs [Re: autoxcuda] #275647
04/05/09 09:17 PM
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sbcjd Offline
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Would the above alignment specifications you stated be the same for a daily driver with radial tires and no drag strip racing?

Re: Need good alignment specs [Re: sbcjd] #275648
04/05/09 09:36 PM
04/05/09 09:36 PM
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Quote:

Would the above alignment specifications you stated be the same for a daily driver with radial tires and no drag strip racing?





I'll set up a daily driver for as much caster as I can get without sacrifcing camber. Camber I like to see at 0 to . 5 deg neg. no more than a 1/2 deg split between camber/caster. Toe I want at .06

Re: Need good alignment specs [Re: sbcjd] #275649
04/05/09 09:46 PM
04/05/09 09:46 PM
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autoxcuda Offline
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Quote:

Would the above alignment specifications you stated be the same for a daily driver with radial tires and no drag strip racing?




Yep, I run radial tires and no drag strip action.

I ran that when I daily drove my cuda to work 80 miles round trip to work every day. Alignment done by Bagge & Son (since 1918) on Washington blvd in Culver City. Spec sheet:
Caster: 4.4 postitive (as much possible, I run offset UCA bushings #7103)
Camber: .5 negative
Total Toe: 0.12 ~1/16" toe in

I don't drive the car daily now. About 5,000 miles a year max. So I can get away with a more aggressive alignment
My current setup
Camber 1.5 negative
Caster 4.5 postive
Total Toe: .12 deg in ~1/16 toe in

That is a LOT of negative camber for the street. I don't know if I'd go recommending that. I drive so hard I always wear the outsides first anyway. So maybe I get 30K miles instead of 50K miles out of the tires. That will still take me 6 years to do. Heck, they'll probably rot by then.

Alignment below done by Cars Muffler in Redondo Bch. Not me in picture.

Last edited by autoxcuda; 04/05/09 11:25 PM.
Re: Need good alignment specs [Re: autoxcuda] #275650
04/05/09 10:28 PM
04/05/09 10:28 PM
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68HemiB Offline
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I'm more than a little late to this particular dance, but I aligned cars for a living in a previous life.

I cannot speak to alignment specifically targeted at the auto-x crowd.

The specifications for Mopar alignment back then tended toward slightly positive camber, and I have not been horribly dissatisfied with 0 to maybe 1/4 degree positive camber to this day. Therefore, you will not find me among those determined for some negative camber action. What I am in favor of is as much balanced, positive caster as possible. Besides getting toe to something reasonable (no more than 1/8" total in), in my mind there is nothing more important than getting the caster really close side-to-side. Anything else is asking for a come-back due to a complaint of pulling.

Offset bushings (installed to maximize positive caster, not positive camber) are some additional help in the direction of positive caster before abandoning stock UCAs in favor of tubular numbers.


Down to just a blue car now.
Re: Need good alignment specs [Re: autoxcuda] #275651
04/05/09 10:36 PM
04/05/09 10:36 PM
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I always ALWAYS run some negative camber. The $64 question: How much? There's a whole host of factors, some of which are:

> How aggressively is the car driven? (i.e., canyon and entrance-ramp carver?)

> I assume radials (otherwise you might actually want 0° camber), but the aspect ratio is important, the lower the aspect ratio, the less negative you need

> Roll stiffness

> Tire pressure

> Wheel width to tire section width

I have run as much as 2° negative and STILL worn out the outer part of the tread first. But, then, I am an animal.

For most of my street-cruiser type buddies, I recommend 0.5 to 0.75° negative.

I like lots of positve caster but not more than 2.5 to 3 deg. or so. More is better for road racing as long as there are no REALLY long high-speed straights -- excess caster makes the car pretty spooky at very high speeds. Caster is somehow hard for a lot of guys to conceptualize. Picture a line drawn between the center of the ball joints. If this line is viewed from dead-ahead of the car, you're looking at steering axis inclination (not independently adjiustable). Viewed from the side, this same line is caster.

Rick

Re: Need good alignment specs [Re: 68HemiB] #275652
04/05/09 10:41 PM
04/05/09 10:41 PM
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aarcuda Offline OP
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Quote:

I'm more than a little late to this particular dance, but I aligned cars for a living in a previous life.

I cannot speak to alignment specifically targeted at the auto-x crowd.

The specifications for Mopar alignment back then tended toward slightly positive camber, and I have not been horribly dissatisfied with 0 to maybe 1/4 degree positive camber to this day. Therefore, you will not find me among those determined for some negative camber action. What I am in favor of is as much balanced, positive caster as possible. Besides getting toe to something reasonable (no more than 1/8" total in), in my mind there is nothing more important than getting the caster really close side-to-side. Anything else is asking for a come-back due to a complaint of pulling.

Offset bushings (installed to maximize positive caster, not positive camber) are some additional help in the direction of positive caster before abandoning stock UCAs in favor of tubular numbers.




as coincidence may have it, i had just checked my 70 service manual and saw they actually called for positive camber (just like you said).

but i can see how negative camber would aid in cornering.

What do you make of the toe numbers i posted? Can I just rotate the tie rod sleeves an equal amount to get it closer to 1/16" or does it need to go back on the rack?

Re: Need good alignment specs [Re: Rick_Ehrenberg] #275653
04/05/09 11:41 PM
04/05/09 11:41 PM
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autoxcuda Offline
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Quote:

I have run as much as 2° negative and STILL worn out the outer part of the tread first. But, then, I am an animal.




ANIMAL!!

Present and attending.



This darn mountain of gravel got in my way last time at the track. Picked out rocks stuck between my rim and tire for a month.







Quote:

I like lots of positive caster but not more than 2.5 to 3 deg. or so. More is better for road racing as long as there are no REALLY long high-speed straights -- excess caster makes the car pretty spooky at very high speeds. Caster is somehow hard for a lot of guys to conceptualize. Picture a line drawn between the center of the ball joints. If this line is viewed from dead-ahead of the car, you're looking at steering axis inclination (not independently adjustable). Viewed from the side, this same line is caster.

Rick




I gave up like 5.5 degrees for 4.5 degree of caster to get that 1.5 negative camber for my last alignment. Just because I thought the benefits were greater.

Rich, what is going on at high speeds that over 3 degrees caster affects the car?? Is assume that's 110 mph plus.

I know from our circle track cars that caster will change the scale readings and weigh bias in a corner when you are turning. You can see that when you turn a car and the fenders go up and down.

Books say caster is only needed for production type heavy sedans. Real open wheel racecars don't run much or any.

Last edited by autoxcuda; 04/06/09 12:06 AM.
Re: Need good alignment specs [Re: aarcuda] #275654
04/06/09 04:14 PM
04/06/09 04:14 PM
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68HemiB Offline
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Quote:

What do you make of the toe numbers i posted? Can I just rotate the tie rod sleeves an equal amount to get it closer to 1/16" or does it need to go back on the rack?




I take your posted toe numbers to be a total of 1/4" in, which is a little bit too much IMO. If it were my car, I would seek maybe half that. While far from the "right" way to do it, one can mess with the toe setting at home. If you are happy with the centering of your steering wheel, any adjustments you do should be done equally to each side's sleeve.

Mark a consistent spot on the tread at a consistent height up from the floor on the front and rear of each tire. Measure where you are now first, and then adjust to about a half of what it is now. Note that the front reading should be and should remain slightly less than across the rear. The goal is to achieve ZERO toe at speed, and setting it slightly IN statically will account for the slight compression/shifting of the steering linkage due to a tendency of the wheels to toe OUT when moving.


Down to just a blue car now.
Re: Need good alignment specs*** UPDATE*** [Re: aarcuda] #275655
04/06/09 07:52 PM
04/06/09 07:52 PM
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rftroy Offline
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With all these very high caster numbers, I hope you guys are talking about power steering. The original questioner didn't mention power or manual, but you sure don't want +5 deg caster with manual steering.

I set mine at 0 to +1 for manual. Above (and at) +1, you can really feel the difference and steering gets hard.

Bob


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70 440 6 pack Roadrunner 4-speed 3.54, Plum Crazy;
68 Formula S conv 383 4-speed 3.23, Electric Blue;
69 Barracuda conv Slant 6 OD4 2.94, 71 B5 Blue;
78 Lil' Red Truck, Red;
70 Challenger S/E. 505 6 pack, Passon 5-speed, 3.55, B7 Blue
Re: Need good alignment specs*** UPDATE*** [Re: rftroy] #275656
04/06/09 09:20 PM
04/06/09 09:20 PM
Joined: Sep 2003
Posts: 1,688
Marlboro, NY, USA
R
Rick_Ehrenberg Offline
top fuel
Rick_Ehrenberg  Offline
top fuel
R

Joined: Sep 2003
Posts: 1,688
Marlboro, NY, USA
Quote:

With all these very high caster numbers, I hope you guys are talking about power steering. The original questioner didn't mention power or manual, but you sure don't want +5 deg caster with manual steering.




...yeah, fast ratio manual and sticky tires. One of the only real forms of exercise I get (the others are even more fun) ;->

+5° caster is crazy. Part of the problem with super-high caster settings is that the vehicle tilts significantly during the caster sweep, actually distorting the camber measurement. It can be almost impossible to prevent a lead (pull) with caster set that high.

Rick

Re: Need good alignment specs*** UPDATE*** [Re: rftroy] #275657
04/06/09 09:21 PM
04/06/09 09:21 PM
Joined: Jan 2003
Posts: 27,453
So Cal
autoxcuda Offline
Too Many Posts
autoxcuda  Offline
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Joined: Jan 2003
Posts: 27,453
So Cal
Quote:

With all these very high caster numbers, I hope you guys are talking about power steering. The original questioner didn't mention power or manual, but you sure don't want +5 deg caster with manual steering.

I set mine at 0 to +1 for manual. Above (and at) +1, you can really feel the difference and steering gets hard.

Bob




Very true. Also the tire width when running manual steering makes a big difference in low speed effort. As does front tire pressure.

But also don't forget we live in the city. I noticed the difference just moving from West LA to Simi Valley. All the parking spaces are bigger, never really have to paralell park much. Just more space out there.

Now when I lived in Iowa... heck I'd forget how to park a car all together when I came back here on college breaks.

Last edited by autoxcuda; 04/06/09 09:26 PM.
Re: Need good alignment specs*** UPDATE*** [Re: autoxcuda] #275658
04/06/09 10:20 PM
04/06/09 10:20 PM
Joined: Mar 2003
Posts: 15,478
the boonies
aarcuda Offline OP
I Live Here
aarcuda  Offline OP
I Live Here

Joined: Mar 2003
Posts: 15,478
the boonies
yes i have power steering. i dont really need any more firmness with my steering. the firm feel stage three is plenty

Re: Need good alignment specs*** UPDATE*** [Re: aarcuda] #275659
04/07/09 08:45 AM
04/07/09 08:45 AM
Joined: May 2003
Posts: 6,560
Downtown Roebuck Ont
Twostick Offline
Still wishing...
Twostick  Offline
Still wishing...

Joined: May 2003
Posts: 6,560
Downtown Roebuck Ont
Too much caster can cause a violent shake after hitting a big bump at speed ie railroad tracks or potholes. 5 deg might work on a tabletop smooth track but I wouldn't want it on the street.

Kevin

Re: Need good alignment specs*** UPDATE*** [Re: Twostick] #275660
04/07/09 10:58 PM
04/07/09 10:58 PM
Joined: Nov 2004
Posts: 9,312
SoCal
68HemiB Offline
master
68HemiB  Offline
master

Joined: Nov 2004
Posts: 9,312
SoCal
Quote:

Too much caster can cause a violent shake after hitting a big bump at speed ie railroad tracks or potholes. 5 deg might work on a tabletop smooth track but I wouldn't want it on the street.

Kevin




Respectfully, I suggest that this symptom in a car has nothing to do with aggressive caster, and everything to do with the integrity and condition of the front suspension. For high caster numbers, I suggest one look up the factory alignment specs on a 1973 era Monte Carlo. That model exhibited none of the symptoms you attribute to positive caster.

When I was lobbying for the merits of positive caster, it was in the framework of the practical numbers one can get from a stock or near-stock Mopar front end, and in a car with power steering.

In addition to the lack of wandering and return-to-center benefits of positive caster, I also see it as a mechanism to obtain beneficial camber in turns. As I have said before, I am not in the camp of negative static camber fans (because I don't throw my pigs around corners quickly very often). However, positive caster will result in a shift toward negative camber on the outboard side and toward positive camber on the inboard side in a turn. This I find to be something desirable.


Down to just a blue car now.
Re: Need good alignment specs*** UPDATE*** [Re: 68HemiB] #275661
04/08/09 12:33 PM
04/08/09 12:33 PM
Joined: Apr 2005
Posts: 279
pgh pa
C
captaindodge Offline
enthusiast
captaindodge  Offline
enthusiast
C

Joined: Apr 2005
Posts: 279
pgh pa
That is a great description of how front end geometry works. Wish you could align my car.

Re: Need good alignment specs [Re: Rick_Ehrenberg] #275662
07/12/09 10:05 AM
07/12/09 10:05 AM
Joined: Feb 2005
Posts: 28,312
Cincinnati, Ohio
Challenger 1 Offline
Too Many Posts
Challenger 1  Offline
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Posts: 28,312
Cincinnati, Ohio
Quote:

I always ALWAYS run some negative camber. The $64 question: How much? There's a whole host of factors, some of which are:

> How aggressively is the car driven? (i.e., canyon and entrance-ramp carver?)

> I assume radials (otherwise you might actually want 0° camber), but the aspect ratio is important, the lower the aspect ratio, the less negative you need

> Roll stiffness

> Tire pressure

> Wheel width to tire section width

I have run as much as 2° negative and STILL worn out the outer part of the tread first. But, then, I am an animal.

For most of my street-cruiser type buddies, I recommend 0.5 to 0.75° negative.

I like lots of positve caster but not more than 2.5 to 3 deg. or so. More is better for road racing as long as there are no REALLY long high-speed straights -- excess caster makes the car pretty spooky at very high speeds. Caster is somehow hard for a lot of guys to conceptualize. Picture a line drawn between the center of the ball joints. If this line is viewed from dead-ahead of the car, you're looking at steering axis inclination (not independently adjiustable). Viewed from the side, this same line is caster.

Rick




Great read, thanks Rick.

Re: Need good alignment specs*** UPDATE*** [Re: Twostick] #275663
07/12/09 07:40 PM
07/12/09 07:40 PM
Joined: Sep 2005
Posts: 6,516
Santa Cruz, California
L
Lefty Offline
master
Lefty  Offline
master
L

Joined: Sep 2005
Posts: 6,516
Santa Cruz, California
Quote:

Too much caster can cause a violent shake after hitting a big bump at speed ie railroad tracks or potholes. 5 deg might work on a tabletop smooth track but I wouldn't want it on the street.

Kevin




I've never heard of that. On 94+ Dodge 4x4 trucks it's the other way around. Not enough positive caster causes death wobble.

Re: Need good alignment specs*** UPDATE*** [Re: Twostick] #275664
07/12/09 08:37 PM
07/12/09 08:37 PM
Joined: Dec 2007
Posts: 7,759
So Cal
HealthServices Offline
Why would you even post that?
HealthServices  Offline
Why would you even post that?

Joined: Dec 2007
Posts: 7,759
So Cal
Quote:

Too much caster can cause a violent shake after hitting a big bump at speed ie railroad tracks or potholes. 5 deg might work on a tabletop smooth track but I wouldn't want it on the street.

Kevin




That's strange mercedes all have 5-7 degrees of caster. Mercedes owners are some of the pickest drivers in the world. Why would Mercedes do something so dumb?





But I will say that too much can make it very hard to adjust camber and toe. To the point you have to adjust them at the same time, if you change one angle, it tends to change the other specs at the same time. Then again it could just the way the mercedes has the mounting points on upper and lower control arms.


Allen Here's a novel idea, let's not throw a bunch of parts at the car hoping it will fix the problem and instead spend a little time diagnosing it first. Life was a little easier when I was just a wrench.
Re: Need good alignment specs*** UPDATE*** [Re: HealthServices] #275665
07/13/09 12:40 PM
07/13/09 12:40 PM
Joined: Sep 2006
Posts: 1,161
Los Angeles, CA
JF_Moparts Offline
super stock
JF_Moparts  Offline
super stock

Joined: Sep 2006
Posts: 1,161
Los Angeles, CA
This is a great thread and I hope it gets archived.

Here's a few questions:

I just took my manual steering 71 RR to an alighnment shop and they couldn't get the caster/camber settings anywhere near the factory recommended settings. Eventually they did the toe-in and didn't charge me for the effort. The suspension was rebuilt in 1991, but since then only 3000 miles have been put on the car. Could I be looking at misaligned eccentric cam mountings?

Also, with laser alignment equipment that mounts reflectors on the wheels, is there an easy way to access the eccentric cams withthe wheels on? I was in the shop, helping the guys locate and turn the cam bolts, and we had a heck of a time doing it. (Of course it didn't help that the shop doesn't get many vintage mopars and had mostly metric tools. I can forgive the first, but not the second.)

I have an appt to get my power steering 71 Sat aligned this afternoon, and I was planning on going with these specs:

Camber: -0.5
Caster: +3.0
Toe: 1/16

One more question: Does it ever make sense to have different camber settings for left and right? Such as:
Left: -0.7
Right: -0.5

Thanks.

Jim

Re: Need good alignment specs*** UPDATE*** [Re: JF_Moparts] #275666
07/13/09 01:03 PM
07/13/09 01:03 PM
Joined: Feb 2005
Posts: 28,312
Cincinnati, Ohio
Challenger 1 Offline
Too Many Posts
Challenger 1  Offline
Too Many Posts

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Posts: 28,312
Cincinnati, Ohio
I reached around the tire with it on, to access the cam bolts. I like your specs, do you have stock upper arms? If so, you might have trouble getting 3+ caster.

Mostly metric tools?

Last edited by Challenger 1; 07/13/09 01:05 PM.
Re: Need good alignment specs*** UPDATE*** [Re: Challenger 1] #275667
07/13/09 01:21 PM
07/13/09 01:21 PM
Joined: Sep 2006
Posts: 1,161
Los Angeles, CA
JF_Moparts Offline
super stock
JF_Moparts  Offline
super stock

Joined: Sep 2006
Posts: 1,161
Los Angeles, CA
Quote:

I reached around the tire with it on, to access the cam bolts. I like your specs, do you have stock upper arms? If so, you might have trouble getting 3+ caster.

Mostly metric tools?




I'm running the tubular uppers from somewhere, I forgot where I got them.

Jim

Re: Need good alignment specs*** UPDATE*** [Re: JF_Moparts] #275668
07/13/09 01:50 PM
07/13/09 01:50 PM
Joined: Jan 2003
Posts: 27,453
So Cal
autoxcuda Offline
Too Many Posts
autoxcuda  Offline
Too Many Posts

Joined: Jan 2003
Posts: 27,453
So Cal
Quote:

Quote:

I reached around the tire with it on, to access the cam bolts. I like your specs, do you have stock upper arms? If so, you might have trouble getting 3+ caster.

Mostly metric tools?




I'm running the tubular uppers from somewhere, I forgot where I got them.

Jim




With good tubular uppers, you should be able to 3+ deg positive caster. The 1/4 camber split is for road crown.

What was the name of shop did you got it aligned?

Take it to Bagge Alignment on Washington Blvd just a few blocks east of Overland. http://www.baggeandson.com/ (310)838-8485 Right accross from MGM studios.

They have been in business for over 90 years. Tom Vardon is a descendant of the original owner. The alignment guy, Paul, has been there for over 30 years. They fully understand custom and handling alignments.

My dad has been going there since the early 60's. We just had car aligned there last week. Tell them Dave Wall sent you (my Dad).

I think I have recommended them to you before.

You've got the silver 71 or the butterscotch 71? I get those two owners mixed up here on Moparts.

Last edited by autoxcuda; 07/13/09 02:22 PM.
Re: Need good alignment specs*** UPDATE*** [Re: autoxcuda] #275669
07/13/09 02:30 PM
07/13/09 02:30 PM
Joined: Sep 2006
Posts: 1,161
Los Angeles, CA
JF_Moparts Offline
super stock
JF_Moparts  Offline
super stock

Joined: Sep 2006
Posts: 1,161
Los Angeles, CA
Quote:

Quote:

Quote:

I reached around the tire with it on, to access the cam bolts. I like your specs, do you have stock upper arms? If so, you might have trouble getting 3+ caster.

Mostly metric tools?




I'm running the tubular uppers from somewhere, I forgot where I got them.

Jim




With good tubular uppers, you should be able to 3+ deg positive caster. The 1/4 camber split is for road crown.

What was the name of shop did you got it aligned?

Take it to Bagge Alignment on Washington Blvd just a few blocks east of Overland. http://www.baggeandson.com/ (310)838-8485 Right accross from MGM studios.

They have been in business for over 90 years. Tom Vardon is a descendant of the original owner. The alignment guy, Paul, has been there for over 30 years. They fully understand custom and handling alignments.

My dad has been going there since the early 60's. We just had car aligned there last week. Tell them Dave Wall sent you (my Dad).

I think I have recommended them to you before.

You've got the silver 71 or the butterscotch 71? I get those two owners mixed up here on Moparts.




Butterscotch.

Yes, you have recommended them to me before. I wish I was closer to them, but I'll probably make the trip due to the quality they offer.

edit: I just made the appt!

Jim

Re: Need good alignment specs*** UPDATE*** [Re: JF_Moparts] #275670
07/13/09 02:43 PM
07/13/09 02:43 PM
Joined: Jan 2003
Posts: 27,453
So Cal
autoxcuda Offline
Too Many Posts
autoxcuda  Offline
Too Many Posts

Joined: Jan 2003
Posts: 27,453
So Cal
Quote:



Yes, you have recommended them to me before. I wish I was closer to them, but I'll probably make the trip due to the quality they offer.

Jim




What was the name of the shop you just went to. What basic area are you in. I go to shops all over So Cal.

Re: Need good alignment specs*** UPDATE*** [Re: JF_Moparts] #275671
07/13/09 02:48 PM
07/13/09 02:48 PM
Joined: Jan 2003
Posts: 27,453
So Cal
autoxcuda Offline
Too Many Posts
autoxcuda  Offline
Too Many Posts

Joined: Jan 2003
Posts: 27,453
So Cal
Quote:


Butterscotch.

Yes, you have recommended them to me before. I wish I was closer to them, but I'll probably make the trip due to the quality they offer.

edit: I just made the appt!

Jim




I've seen your butterscotch car at Stabile's in Hollywood and Lion's in Torrance.

Re: Need good alignment specs*** UPDATE*** [Re: autoxcuda] #275672
07/13/09 04:28 PM
07/13/09 04:28 PM
Joined: Sep 2006
Posts: 1,161
Los Angeles, CA
JF_Moparts Offline
super stock
JF_Moparts  Offline
super stock

Joined: Sep 2006
Posts: 1,161
Los Angeles, CA
Quote:

Quote:


Butterscotch.

Yes, you have recommended them to me before. I wish I was closer to them, but I'll probably make the trip due to the quality they offer.

edit: I just made the appt!

Jim




I've seen your butterscotch car at Stabile's in Hollywood and Lion's in Torrance.




Yep. Stabile's closed and I believe he opened a small private shop near the old one. These days I am taking my car to a small shop in the SF valley where old Mopars are a specialty. I've encouraged the owner to contribute to this forum.

Jim

Re: Need good alignment specs*** UPDATE*** [Re: JF_Moparts] #275673
07/15/09 01:52 PM
07/15/09 01:52 PM
Joined: Sep 2006
Posts: 1,161
Los Angeles, CA
JF_Moparts Offline
super stock
JF_Moparts  Offline
super stock

Joined: Sep 2006
Posts: 1,161
Los Angeles, CA
Well, I got the alignment done by Bagge & Son and wow, what a great job they did!

Here's what they did:

Left:
Camber: -.06
Caster: 2.8
Toe: 0.07

Right:
Camber: -.05
Caster: 3.2
Toe: 0.12

It steers very well, but there's still a little vibration at about 60mph, which is a different matter altogether.

Jim

Re: Need good alignment specs*** UPDATE*** [Re: JF_Moparts] #275674
07/15/09 02:40 PM
07/15/09 02:40 PM
Joined: Sep 2005
Posts: 6,516
Santa Cruz, California
L
Lefty Offline
master
Lefty  Offline
master
L

Joined: Sep 2005
Posts: 6,516
Santa Cruz, California
Quote:

Left:
Camber: -.06
Caster: 2.8
Toe: 0.07

Right:
Camber: -.05
Caster: 3.2
Toe: 0.12





Re: Need good alignment specs*** UPDATE*** [Re: JF_Moparts] #275675
07/15/09 03:34 PM
07/15/09 03:34 PM
Joined: Dec 2007
Posts: 7,759
So Cal
HealthServices Offline
Why would you even post that?
HealthServices  Offline
Why would you even post that?

Joined: Dec 2007
Posts: 7,759
So Cal
What did it end up costing?

I have not paid retail in a while and have no idea what the rates are anymore.


Allen Here's a novel idea, let's not throw a bunch of parts at the car hoping it will fix the problem and instead spend a little time diagnosing it first. Life was a little easier when I was just a wrench.
Re: Need good alignment specs*** UPDATE*** [Re: HealthServices] #275676
07/15/09 03:35 PM
07/15/09 03:35 PM
Joined: Sep 2006
Posts: 1,161
Los Angeles, CA
JF_Moparts Offline
super stock
JF_Moparts  Offline
super stock

Joined: Sep 2006
Posts: 1,161
Los Angeles, CA
Quote:

What did it end up costing?

I have not paid retail in a while and have no idea what the rates are anymore.




I got a 10% discount. With the discount it was $71.

Jim

Re: Need good alignment specs*** UPDATE*** [Re: JF_Moparts] #275677
07/15/09 03:40 PM
07/15/09 03:40 PM
Joined: May 2005
Posts: 907
Mississauga, Canada
KARLN Offline
super stock
KARLN  Offline
super stock

Joined: May 2005
Posts: 907
Mississauga, Canada
Quote:

Well, I got the alignment done by Bagge & Son and wow, what a great job they did!

Here's what they did:

Left:
Camber: -.06
Caster: 2.8
Toe: 0.07

Right:
Camber: -.05
Caster: 3.2
Toe: 0.12

It steers very well, but there's still a little vibration at about 60mph, which is a different matter altogether.

Jim were you able to find the source of the vibration?


B5 Challenger T/A
Re: Need good alignment specs*** UPDATE*** [Re: JF_Moparts] #275678
07/15/09 03:45 PM
07/15/09 03:45 PM
Joined: Dec 2007
Posts: 7,759
So Cal
HealthServices Offline
Why would you even post that?
HealthServices  Offline
Why would you even post that?

Joined: Dec 2007
Posts: 7,759
So Cal
Thats a good price


Allen Here's a novel idea, let's not throw a bunch of parts at the car hoping it will fix the problem and instead spend a little time diagnosing it first. Life was a little easier when I was just a wrench.
Re: Need good alignment specs*** UPDATE*** [Re: KARLN] #275679
07/15/09 04:15 PM
07/15/09 04:15 PM
Joined: Sep 2006
Posts: 1,161
Los Angeles, CA
JF_Moparts Offline
super stock
JF_Moparts  Offline
super stock

Joined: Sep 2006
Posts: 1,161
Los Angeles, CA
Quote:



Jim were you able to find the source of the vibration?




Nope. I've had it for several years now, and don't know what's causing it. The front suspension was rebuilt in 2007. I have brand new tires and wheels. My driveshaft was just balanced. And I have a new alignment.

Maybe the frame is a little out of whack? Or maybe I screwed something up when I rebuilt the front suspension.

Jim

Re: Need good alignment specs*** UPDATE*** [Re: JF_Moparts] #275680
07/15/09 04:43 PM
07/15/09 04:43 PM
Joined: Nov 2004
Posts: 9,312
SoCal
68HemiB Offline
master
68HemiB  Offline
master

Joined: Nov 2004
Posts: 9,312
SoCal
Quote:

Quote:



Jim were you able to find the source of the vibration?




Nope. I've had it for several years now, and don't know what's causing it. The front suspension was rebuilt in 2007. I have brand new tires and wheels. My driveshaft was just balanced. And I have a new alignment.

Maybe the frame is a little out of whack? Or maybe I screwed something up when I rebuilt the front suspension.

Jim




A true vibration (as opposed to a steering linkage shimmy), is not going to be caused by a frame out of whack or your "screwing something up when you rebuilt the front suspension". It is coming from a rotating component.


Down to just a blue car now.
Re: Need good alignment specs*** UPDATE*** [Re: 68HemiB] #275681
07/15/09 06:02 PM
07/15/09 06:02 PM
Joined: Sep 2006
Posts: 1,161
Los Angeles, CA
JF_Moparts Offline
super stock
JF_Moparts  Offline
super stock

Joined: Sep 2006
Posts: 1,161
Los Angeles, CA
Quote:

Quote:

Quote:



Jim were you able to find the source of the vibration?




Nope. I've had it for several years now, and don't know what's causing it. The front suspension was rebuilt in 2007. I have brand new tires and wheels. My driveshaft was just balanced. And I have a new alignment.

Maybe the frame is a little out of whack? Or maybe I screwed something up when I rebuilt the front suspension.

Jim




A true vibration (as opposed to a steering linkage shimmy), is not going to be caused by a frame out of whack or your "screwing something up when you rebuilt the front suspension". It is coming from a rotating component.




The vibration is only present between 57-63 mph. I feel it in the entire front end, but mainly in the steering wheel. It's less severe now that I've gotten the car aligned.

Jim

Re: Need good alignment specs*** UPDATE*** [Re: JF_Moparts] #275682
07/15/09 07:34 PM
07/15/09 07:34 PM
Joined: Dec 2007
Posts: 10,542
BROOK PARK, OH
WILD BILL Offline
Senior Member of the Junior Dragster Club
WILD BILL  Offline
Senior Member of the Junior Dragster Club

Joined: Dec 2007
Posts: 10,542
BROOK PARK, OH
That sounds typical of wheel/tire balance issue

Re: Need good alignment specs*** UPDATE*** [Re: WILD BILL] #275683
07/15/09 08:32 PM
07/15/09 08:32 PM
Joined: Sep 2006
Posts: 1,161
Los Angeles, CA
JF_Moparts Offline
super stock
JF_Moparts  Offline
super stock

Joined: Sep 2006
Posts: 1,161
Los Angeles, CA
I'll start a new thread on this.

Thanks.

Jim

Re: Need good alignment specs*** UPDATE*** [Re: JF_Moparts] #275684
07/16/09 02:10 AM
07/16/09 02:10 AM
Joined: Jan 2003
Posts: 27,453
So Cal
autoxcuda Offline
Too Many Posts
autoxcuda  Offline
Too Many Posts

Joined: Jan 2003
Posts: 27,453
So Cal
Quote:

Quote:

What did it end up costing?

I have not paid retail in a while and have no idea what the rates are anymore.




I got a 10% discount. With the discount it was $71.

Jim




I heard another shop today quote a alignment at $80.

So what did you think of Bagge? Did you mention I sent you?

Were they even phased by it being a 30 year old Mopar? Did you notice they still do on car old fashioned wheel balancing with an electric motor driven roller. One of the best ways to balance a Magnum 500 rim since they don't have a hub centric.

I drove by there today and I spotted a 57 Chevy in corner of my eye. Almost everyday they have something in there 30+ years old. I've seen bathtub Porsche's, late 50's Chrysler Ghia's, all kinds of exotics....

Did you mention to Tom about you vibration?? Did he have any suggustions? I bet it's a driveshaft angle. The longer Gear Vendors ampliphies that. I bet they offer driveshaft angle checking/correction. Call them.

Do you have any drop or aftermarket front hangers or rear shackles on you leaves?

Troy had one in his T/A and did a bunch of stuff and then finally checked and corrected the driveshaft angle.

Re: Need good alignment specs*** UPDATE*** [Re: autoxcuda] #275685
08/27/11 12:56 PM
08/27/11 12:56 PM
Joined: Mar 2003
Posts: 15,478
the boonies
aarcuda Offline OP
I Live Here
aarcuda  Offline OP
I Live Here

Joined: Mar 2003
Posts: 15,478
the boonies
Going for another alignment today. I put in new Offset bushings, balljoints and wheel bearings and wheel bearings over the Winter.


It's got a cop motor, a 440 cubic inch plant, it's got cop tires, cop suspensions, cop shocks. It's a model made before catalytic converters so it'll run good on regular gas.
Re: Need good alignment specs*** UPDATE*** [Re: aarcuda] #275686
08/28/11 01:15 PM
08/28/11 01:15 PM
Joined: Mar 2003
Posts: 15,478
the boonies
aarcuda Offline OP
I Live Here
aarcuda  Offline OP
I Live Here

Joined: Mar 2003
Posts: 15,478
the boonies
what a waste of time. went to 4 places and each one said they can do custom specs. said their computer doesnt go back before 1983 so there was no way they can do it. i'll need to go to the guy i went to last time but hes only open during the week


It's got a cop motor, a 440 cubic inch plant, it's got cop tires, cop suspensions, cop shocks. It's a model made before catalytic converters so it'll run good on regular gas.
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