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CAL TRACS WITH STOCK SPRINGS? #2904970
04/01/21 04:02 PM
04/01/21 04:02 PM
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junction city oregon
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viperblue72 Offline OP
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How well would these work with stock springs on my ‘74 Cuda?
I am currently going to run drag radials 295/65/15 and it’s a 4-speed car.
I also don’t know what shocks to run. Front or rear. It’s going to be mostly street and some strip.
The engine is a 511 that made 743hp/700tq.
Rear is a Dana 4.10.
I know the 4-speed is the weak link but I’ll see how it will hold up with no power shifting and going as easy as I can.
The budget is getting tighter which is why I am asking how well this will work for now.

Re: CAL TRACS WITH STOCK SPRINGS? [Re: viperblue72] #2904972
04/01/21 04:05 PM
04/01/21 04:05 PM
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bronx n.y
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one bad fish Offline
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i like the cal trac springs my self

Re: CAL TRACS WITH STOCK SPRINGS? [Re: one bad fish] #2905041
04/01/21 06:46 PM
04/01/21 06:46 PM
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Wichita
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GY3 Offline
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The Cal-tracs are a system and work best when you use all their components.

I tried them with SS springs and the car porpoised badly.

I ended up using the split mono's with the Cal-tracs and the Rancho/Calvert 9 position shocks.

With this setup it runs mid 1.50 60 ft.'s n/a and best of 1.36 with a 250 nitrous shot. All this is in a 3,700 lbs. car using only 275 ET Street Pro's.

I did recently upgrade to a Double Adustable Viking Crusader rear shock. I really need fronts for better control (currently 3 position adjustable CE shocks) and will upgrade them this Fall but so far the rears are working really well with the n/a tune. I would recommend a good double adjustable shock on all 4 corners at your power level.

Last edited by GY3; 04/01/21 06:51 PM.

'63 Dodge 330
11.19 @ 121 mph
Pump gas, n/a, through the mufflers on street tires with 3.54's. 3,600 lbs.
10.01 @ 133mph with a 250 shot of nitrous an a splash of race gas. 1.36 60 ft. 3,700 lbs.

Re: CAL TRACS WITH STOCK SPRINGS? [Re: viperblue72] #2905044
04/01/21 06:54 PM
04/01/21 06:54 PM
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northwest USA
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NANKET Offline
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You have 743 horsepower and you want to mix and match rear suspension parts? Is this an. April fools gag?

You are crazy for Considering this. It’s not going to work. Do it right,

Re: CAL TRACS WITH STOCK SPRINGS? [Re: viperblue72] #2905052
04/01/21 07:13 PM
04/01/21 07:13 PM
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Anoka County, MN
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Leigh Offline
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I also tried them with 002-003 springs. 635 hp,5900 flash, 4.56, 3100 lbs.I needed a really tight 50/50 valving or else the rear end would pound the floor pan. Travis told me to run a stock type spring, so you should be good, but the stick and the weight will require a good shock. You might consider mapping out the anti-squat (neutral) line, and playing with ride heights. At least that’s my opinion.

Re: CAL TRACS WITH STOCK SPRINGS? [Re: Leigh] #2905060
04/01/21 07:48 PM
04/01/21 07:48 PM
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Pattison Texas
CSK Offline
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Radials & a stick shift is a no no


1968 Charger COLD A/C Hilborn EFI
512ci 9.7 compression, Stealth heads, 4.10 gear A518 ODtrans 4100lb,10.93 full street car trim
2020 T/A 392 Stock 11.79 @ 114.5

Re: CAL TRACS WITH STOCK SPRINGS? [Re: viperblue72] #2905105
04/01/21 09:27 PM
04/01/21 09:27 PM
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Sydney,Australia
tex013 Offline
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i run Caltracs with Mopar XHD springs , have done for over 10 years and various power upgrades .
From footbrake to transbrake leaving @4500 and currently back to foot brake .
I would like to try split monos , weight reduction and probably stiffer . BUT i am concerned how they will hold up to daily driver , probably ok , and when i go racing i have rear race wheels , 29.5x10.5R15 PBR , trolley jack , 20L fuel , spare tyre and assorted tools etc in the boot , not sure .

Tex


New best ET 10.259@129.65 .
New best MPH 130.32
Finally fitted a solid cam,
stepped it up a bit more
3690lbs through the mufflers
New World block 3780lbs 10.278@130.80 . Wowser 10.253@130.24 footbraking from 1500rpm
Power by Tex's Automotive
Re: CAL TRACS WITH STOCK SPRINGS? [Re: viperblue72] #2905130
04/01/21 10:31 PM
04/01/21 10:31 PM
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Rittman Ohio
fourgearsavoy Offline
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You MIGHT be able to make it work with stock weak springs. The drag radials and a stiff stock type clutch will really kill some parts if it dead hooks like radials do. If you have a 23 spline unit say goodbye to third gear now because it will break and ruin a good cluster and a few other parts as well twocents

Gus beer


64 Plymouth Savoy
493 Indy EZ's by Nick at Compu-Flow
5-Speed Richmond faceplate Liberty box
Dana 60
Re: CAL TRACS WITH STOCK SPRINGS? [Re: viperblue72] #2905162
04/01/21 11:54 PM
04/01/21 11:54 PM
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Oregon
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AndyF Offline
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Originally Posted by viperblue72
How well would these work with stock springs on my ‘74 Cuda?
I am currently going to run drag radials 295/65/15 and it’s a 4-speed car.
I also don’t know what shocks to run. Front or rear. It’s going to be mostly street and some strip.
The engine is a 511 that made 743hp/700tq.
Rear is a Dana 4.10.
I know the 4-speed is the weak link but I’ll see how it will hold up with no power shifting and going as easy as I can.
The budget is getting tighter which is why I am asking how well this will work for now.


It will work fine as long as you don't use more than half throttle.

Re: CAL TRACS WITH STOCK SPRINGS? [Re: CSK] #2905398
04/02/21 02:10 PM
04/02/21 02:10 PM
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junction city oregon
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viperblue72 Offline OP
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Originally Posted by csk
Radials & a stick shift is a no no


I know it isn’t ideal. Radials didn’t even work well with my last small block. The radials are mostly for the street. I plan to run a 29.5 bias when funds allow.
I’ll go ahead and order the mono-leafs. I just figured some have tried them with stock leafs and could tell me how it would or wouldn’t work.
AndyF lol.

Re: CAL TRACS WITH STOCK SPRINGS? [Re: viperblue72] #2905402
04/02/21 02:15 PM
04/02/21 02:15 PM
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Tulsa, Oklahoma
340Cuda Offline
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You will find folks that have got them to work with most any spring.

However IMO most folks the best results the quickest with the Calvert spring they recommend for your car.

Last edited by 340Cuda; 04/03/21 12:05 PM.
Re: CAL TRACS WITH STOCK SPRINGS? [Re: tex013] #2905412
04/02/21 02:59 PM
04/02/21 02:59 PM
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Pattison Texas
CSK Offline
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Originally Posted by tex013
i run Caltracs with Mopar XHD springs , have done for over 10 years and various power upgrades .
From footbrake to transbrake leaving @4500 and currently back to foot brake .
I would like to try split monos , weight reduction and probably stiffer . BUT i am concerned how they will hold up to daily driver , probably ok , and when i go racing i have rear race wheels , 29.5x10.5R15 PBR , trolley jack , 20L fuel , spare tyre and assorted tools etc in the boot , not sure .

Tex


I have over 11k miles on my split monos, & they were used when I got them, my Charger aint no light weight ether


1968 Charger COLD A/C Hilborn EFI
512ci 9.7 compression, Stealth heads, 4.10 gear A518 ODtrans 4100lb,10.93 full street car trim
2020 T/A 392 Stock 11.79 @ 114.5

Re: CAL TRACS WITH STOCK SPRINGS? [Re: viperblue72] #2905426
04/02/21 03:27 PM
04/02/21 03:27 PM
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Bend,OR USA
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Cab_Burge Offline
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Cal Tracs were develop for NHRA stock class racing back when you had to have stock springs in your race car, I use to race against John Calvert in stock in division 7, he has ran a 1968 428 Cobra Jet motor in his 4 speed fast back Mustang long before racing in NHRA.
He has raced the same car in NHRA SS also with his bars and stock springs long ago also so stock spring can be made to work fine up
Are there better springs available today, you betcha up scope
As far as stick shifts and radials I don't think I would do that now tsk Buy another set of rims and bias 4 speed drag tires and go win some races thumbs


Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
Re: CAL TRACS WITH STOCK SPRINGS? [Re: Cab_Burge] #2905475
04/02/21 05:06 PM
04/02/21 05:06 PM
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junction city oregon
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viperblue72 Offline OP
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Who is a dealer for them on here? And is it cheaper if I get an entire kit?

Re: CAL TRACS WITH STOCK SPRINGS? [Re: Cab_Burge] #2905477
04/02/21 05:08 PM
04/02/21 05:08 PM
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junction city oregon
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viperblue72 Offline OP
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Originally Posted by Cab_Burge
Cal Tracs were develop for NHRA stock class racing back when you had to have stock springs in your race car, I use to race against John Calvert in stock in division 7, he has ran a 1968 428 Cobra Jet motor in his 4 speed fast back Mustang long before racing in NHRA.
He has raced the same car in NHRA SS also with his bars and stock springs long ago also so stock spring can be made to work fine up
Are there better springs available today, you betcha up scope
As far as stick shifts and radials I don't think I would do that now tsk Buy another set of rims and bias 4 speed drag tires and go win some races thumbs


Cab, I’m hoping to find some wheels/tires at the swap meets. I’m trying to get my car ready for the function for junction cruise.
I’ll be at Woodburn tomorrow spectating. 👍

Re: CAL TRACS WITH STOCK SPRINGS? [Re: fourgearsavoy] #2905488
04/02/21 05:20 PM
04/02/21 05:20 PM
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junction city oregon
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viperblue72 Offline OP
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Originally Posted by fourgearsavoy
You MIGHT be able to make it work with stock weak springs. The drag radials and a stiff stock type clutch will really kill some parts if it dead hooks like radials do. If you have a 23 spline unit say goodbye to third gear now because it will break and ruin a good cluster and a few other parts as well twocents

Gus beer



I know there’s a good chance I’ll break it. I’m just going to go easy on it. And not launch it too hard. And shift easy. I’ll probably only race a few times this year for fun. The rest will be street miles. I still plan to talk to you when I order a different trans. 👍

Re: CAL TRACS WITH STOCK SPRINGS? [Re: viperblue72] #2905596
04/02/21 09:44 PM
04/02/21 09:44 PM
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fredericksburg,va
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cudaman1969 Offline
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Get the Clutch Tammer. No more breaking stuff
Clutchtamer.com

Last edited by cudaman1969; 04/02/21 09:50 PM.
Re: CAL TRACS WITH STOCK SPRINGS? [Re: CSK] #2905634
04/03/21 01:12 AM
04/03/21 01:12 AM
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Sydney,Australia
tex013 Offline
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Originally Posted by csk
Originally Posted by tex013
i run Caltracs with Mopar XHD springs , have done for over 10 years and various power upgrades .
From footbrake to transbrake leaving @4500 and currently back to foot brake .
I would like to try split monos , weight reduction and probably stiffer . BUT i am concerned how they will hold up to daily driver , probably ok , and when i go racing i have rear race wheels , 29.5x10.5R15 PBR , trolley jack , 20L fuel , spare tyre and assorted tools etc in the boot , not sure .

Tex


I have over 11k miles on my split monos, & they were used when I got them, my Charger aint no light weight ether


Thanks . I do 5/8000miles a year . I guess i should give them a call .

Tex


New best ET 10.259@129.65 .
New best MPH 130.32
Finally fitted a solid cam,
stepped it up a bit more
3690lbs through the mufflers
New World block 3780lbs 10.278@130.80 . Wowser 10.253@130.24 footbraking from 1500rpm
Power by Tex's Automotive
Re: CAL TRACS WITH STOCK SPRINGS? [Re: tex013] #2905642
04/03/21 05:26 AM
04/03/21 05:26 AM
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Posts: 2,915
A shed in England
Tig Offline
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Originally Posted by tex013
i run Caltracs with Mopar XHD springs , have done for over 10 years and various power upgrades .
From footbrake to transbrake leaving @4500 and currently back to foot brake .
I would like to try split monos , weight reduction and probably stiffer . BUT i am concerned how they will hold up to daily driver , probably ok , and when i go racing i have rear race wheels , 29.5x10.5R15 PBR , trolley jack , 20L fuel , spare tyre and assorted tools etc in the boot , not sure .

Tex


I got my -1" ride height Caltrac Split Mono's in 2000, I got bored waiting for them to "settle" so in 2016 I welded on some 1" lowering pads grin. I don't think you will have a problem up


'74 Challenger..9.46 @ 145.9 1/4, 6.001 @ 118 1/8 so far. 4023lb !!! # N/A, Marsh performance 655ci, Indy Maxx, T/R, Indy 600-13 X's, Street legal, pump gas, full interior, Cal-Tracs, mufflers, 3:73's and real 10.5 radials.
9.51 @ 142.4 1/4, 6.003 @ 114 1/8 with our old mule KB, 572-13, 580 wedge.
RHD '68 Barracuda Fastback 323ci street/strip. Best ET 13.88 @ 99.03
Re: CAL TRACS WITH STOCK SPRINGS? [Re: Tig] #2906618
04/05/21 02:41 AM
04/05/21 02:41 AM
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huimerind Offline
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You can make the front stiffer, if you move the 2nd leaf as close to the front spring eye as possible, then dril and bolt them together.
Also clamp the others from axle forward.







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