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Re: Squat or Lift ? [Re: LA360] #2525734
07/23/18 07:53 AM
07/23/18 07:53 AM
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Sydney,Australia
tex013 Offline
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Originally Posted By LA360
The Calvert 9 way adjustable shocks are Rancho's with Calvert stickers on them.


Yep


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: Squat or Lift ? [Re: GY3] #2525768
07/23/18 10:53 AM
07/23/18 10:53 AM
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Metro Detroit
OUTLAWD Offline
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Originally Posted By GY3
Below is the difference between SS 3400 lbs. springs and Cal-Tracs with split mono's.

Both worked, up to a point, but two completely different pre-loads on the torsion bars and all twisted up with SS springs.



What rear shocks are you running?


Faster, Faster until the thrill of speed overcomes the fear of death...

71 Swinger - slowly collecting dust/parts
66 Belv. II - just a streetcar
88 Mustang - turbo LS beater
Re: Squat or Lift ? [Re: ozymaxwedge] #2525778
07/23/18 11:20 AM
07/23/18 11:20 AM
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Posts: 13,319
Marion, South Carolina [><]
an8sec70cuda Offline
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It should lift/separate.
See pic...won a bracket class the day this pic was taken dialing 9.60s and 60 footing 1.32-1.34.

cuda%20launch%20rockingham.jpg

CHIP
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Re: Squat or Lift ? [Re: GY3] #2525846
07/23/18 01:35 PM
07/23/18 01:35 PM
Joined: Oct 2003
Posts: 11,678
W. Kentucky
justinp61 Offline
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Originally Posted By GY3
Below is the difference between SS 3400 lbs. springs and Cal-Tracs with split mono's.

Both worked, up to a point, but two completely different pre-loads on the torsion bars and all twisted up with SS springs.



I wonder how much the roll bar helped with the twist.

Re: Squat or Lift ? [Re: OUTLAWD] #2525921
07/23/18 04:21 PM
07/23/18 04:21 PM
Joined: Dec 2013
Posts: 4,651
Wichita
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GY3 Offline
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Wichita
Originally Posted By OUTLAWD
Originally Posted By GY3
Below is the difference between SS 3400 lbs. springs and Cal-Tracs with split mono's.

Both worked, up to a point, but two completely different pre-loads on the torsion bars and all twisted up with SS springs.



What rear shocks are you running?


Monroe long truck or station wagon shocks on the SS springs.

Calvert 9 way on the Cal-Trac setup. You have to firm up extension with the Calverts or it hits too hard and unloads.


'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: Squat or Lift ? [Re: justinp61] #2525925
07/23/18 04:26 PM
07/23/18 04:26 PM
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Wichita
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GY3 Offline
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Originally Posted By justinp61
Originally Posted By GY3
Below is the difference between SS 3400 lbs. springs and Cal-Tracs with split mono's.

Both worked, up to a point, but two completely different pre-loads on the torsion bars and all twisted up with SS springs.



I wonder how much the roll bar helped with the twist.


Not sure, but don't think it was much. It has subframe connectors in both shots. Took a TON of preload out of the drivers side front bar as I recall to get it level after the spring swap.


'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: Squat or Lift ? [Re: ozymaxwedge] #2526411
07/24/18 02:11 PM
07/24/18 02:11 PM
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Posts: 2,799
Connecticut
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To the Op, does it always come out of the burn out with the rear hanging out to the left? If it does it in different lanes at different tracks you could put a turn in the drivers torsion bar. Without scales it is an indication the rear weights are unequal under load. I have found a little adjustment will go a long way. I would also check to see if the front shocks are topping out. It looks like the nose either tops out sharply or the tire spins and drops the nose quickly. Shock tuning. Also I know guy who runs an AFX car who said the best suspension mod he ever did was a BIG aftermarket rear sway bar.

Last edited by FurryStump; 07/24/18 02:14 PM.

best of 11.39 at 117 mph 1.60 60’. 68 340 S Barracuda Fastback F.A.S.T [IMG]http://i67.tinypic.com/2mnnnnt.jpg[/IMG]
Re: Squat or Lift ? [Re: FurryStump] #2526673
07/24/18 11:51 PM
07/24/18 11:51 PM
Joined: Sep 2015
Posts: 1,096
Australia
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ozymaxwedge Offline OP
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Originally Posted By FurryStump
To the Op, does it always come out of the burn out with the rear hanging out to the left? If it does it in different lanes at different tracks you could put a turn in the drivers torsion bar. Without scales it is an indication the rear weights are unequal under load. I have found a little adjustment will go a long way. I would also check to see if the front shocks are topping out. It looks like the nose either tops out sharply or the tire spins and drops the nose quickly. Shock tuning. Also I know guy who runs an AFX car who said the best suspension mod he ever did was a BIG aftermarket rear sway bar.


Think there is a little camber in the track on that lane in the burnout area, my race car use to always swing sideways a little.
I have the rear shocks coming so I will try them first a see how she goes.


1963 Plymouth Max Wedge
1971 Barracuda
Re: Squat or Lift ? [Re: an8sec70cuda] #2526677
07/24/18 11:53 PM
07/24/18 11:53 PM
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Posts: 1,096
Australia
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ozymaxwedge Offline OP
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Australia
Originally Posted By an8sec70cuda
It should lift/separate.
See pic...won a bracket class the day this pic was taken dialing 9.60s and 60 footing 1.32-1.34.



NICE
If I can get them off the ground half that much I'll be stoked


1963 Plymouth Max Wedge
1971 Barracuda
Re: Squat or Lift ? [Re: ozymaxwedge] #2526751
07/25/18 07:13 AM
07/25/18 07:13 AM
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Posts: 9,791
MI, usa
dvw Offline
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The burnout and the leave are 2 different animals. Mine always goes left on the burnout. But when it leaves it carries the wheels nearly 60ft every time dead straight.
Doug

Re: Squat or Lift ? [Re: ozymaxwedge] #2526876
07/25/18 01:37 PM
07/25/18 01:37 PM
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Posts: 19,304
Las Vegas
Al_Alguire Offline
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Las Vegas
Generally when a car is not going straight in the burnout it is from a lack off wheelspeed nothing more. If a car kicks out on the burnout its needs RPM or not being done in high gear to ad more wheelspeed it should straighten right up.


"I am not ashamed to confess I am ignorant of what I do not know."

"It's never wrong to do the right thing"
Re: Squat or Lift ? [Re: dvw] #2527092
07/25/18 09:08 PM
07/25/18 09:08 PM
Joined: Dec 2006
Posts: 2,094
Byron, NY
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Originally Posted By dvw
Lift aids tire load, squat removes load. Once the power levels get huge, (way more than I'll ever have) the tire can get over worked. In that case the instant center will be low and long enabling squat to keep from over working the tire.
Doug

up iagree


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Re: Squat or Lift ? [Re: Al_Alguire] #2527131
07/25/18 11:02 PM
07/25/18 11:02 PM
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Posts: 1,096
Australia
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ozymaxwedge Offline OP
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Originally Posted By Al_Alguire
Generally when a car is not going straight in the burnout it is from a lack off wheelspeed nothing more. If a car kicks out on the burnout its needs RPM or not being done in high gear to ad more wheelspeed it should straighten right up.


In that video Al it was 6500 ++ in top


1963 Plymouth Max Wedge
1971 Barracuda
Re: Squat or Lift ? [Re: Al_Alguire] #2527152
07/25/18 11:53 PM
07/25/18 11:53 PM
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Posts: 9,791
MI, usa
dvw Offline
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Originally Posted By Al_Alguire
Generally when a car is not going straight in the burnout it is from a lack off wheelspeed nothing more. If a car kicks out on the burnout its needs RPM or not being done in high gear to ad more wheelspeed it should straighten right up.

My burnouts are in high gear only, 6000 rpm. They average about 4.5 seconds. Do you think it needs more rpm?
Doug

Re: Squat or Lift ? [Re: dvw] #2527207
07/26/18 01:14 AM
07/26/18 01:14 AM
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Bend,OR USA
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Originally Posted By dvw
Originally Posted By Al_Alguire
Generally when a car is not going straight in the burnout it is from a lack off wheelspeed nothing more. If a car kicks out on the burnout its needs RPM or not being done in high gear to ad more wheelspeed it should straighten right up.

My burnouts are in high gear only, 6000 rpm. They average about 4.5 seconds. Do you think it needs more rpm?
Doug

One sure way to find out is to try some more time and then less time in the burn out using the 60 ft. times and reactions as your judgement scope


Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
Re: Squat or Lift ? [Re: ozymaxwedge] #2527337
07/26/18 01:00 PM
07/26/18 01:00 PM
Joined: Jan 2003
Posts: 19,304
Las Vegas
Al_Alguire Offline
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Las Vegas
Its not about duration as much as wheelspeed in the burnout. Wheelspeed creates more heat in the tire much quicker, lessening the amount of time needed in the burnout. Id guess most guys are starting slow on the loud pedal in the burnout, that's what generally will kick the car sideways, increasing the RPM juts keeps it on its original path. Watch Pro Stock, Top Sportsman, Comp guy that occasionally get sideways, they straighten it out with MORE rpm. Not saying this a 100% universal truth but is the case more often than not.


"I am not ashamed to confess I am ignorant of what I do not know."

"It's never wrong to do the right thing"
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