Posted By: moparbud
WHAT TORSION BARS TO RUN - 01/04/09 02:32 AM
can any one tell me what torsion bars to buy for my 68 roadrunner drag car i have ladder bar rear and are mopar performance ok summit has .920/.960
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i am not sure what spring rate is on the rear. this is my first ladder bar car. and trying to learn it all. thanks guys for your help. any info or advice is greatly appreciated.
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"Stored Energy" is what your looking for and a .920 bar will not do it. You want the newest and the smallest bar you can get your hands on. In a perfect world you want the bar turned all the way up just so the body is just off the bump stops (and that is with the bump stops shaved down to less than an inch thick) You can always control compression and expansion with the shock and limiters.
Just my opinion.
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"Stored Energy" is what your looking for and a .920 bar will not do it. You want the newest and the smallest bar you can get your hands on. In a perfect world you want the bar turned all the way up just so the body is just off the bump stops (and that is with the bump stops shaved down to less than an inch thick) You can always control compression and expansion with the shock and limiters.
Just my opinion.
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I`m running 30 year old 6-cyl bars and they seem to be working ok.
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"Stored Energy" is what your looking for and a .920 bar will not do it.
Just my opinion.
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Lets talk about the B body first....
B Body are hard because Mopar no longer sells the old P5249156 .840 bars. I would look and see what the after market has. B Body's can be made to work very well but the learning curve is long. You have to have a very consistent engine,trans and rear suspension to be able to fine tune the front suspension. Trying to do this on a fresh chassis is hard to say the least.
Here is a picture of a customer of mine. Chuck Steinbeck has ran this car in D, E and F and has done very well but 10lbs and a 1/2 turn on his shocks makes a big difference. IF I remember correctly these are the some .840 bars.