What's the down side to truck arms for a Modified?

If you really drive hard into a corner you might get a little under steer or as circle track racers say push. On highway cars its best to connect the pan hard bar to the drivers side. I say this because the NASCAR cars mount the pan hard bar on the p***enger side on the ovals. But on the road course they mount on the drivers side. it just works better. I have used truck arms on circle track asphalt cars for over 30 years. I tried them on dirt but on accel off the corner the tires would go into shock and just spin.

 

So he should put 2 in, one going each way?

 

Yep. With a bell crank in the middle. Then call it a watts linkage


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I've had my '34 3 window for 3 years now and I finally have the ride improved to "not too bad". It hasn't had the "death rattle" since going thru the front suspension this summer. The car has Chevy truck rear arms that the front mounts are on 38" centers. The rear mounts bolt solidly to the rear axle on 48" centers. Also, they are 40" long to the centerline of the rear axle. It has a stock '34 "banana" transverse spring and Koni single adjustable shocks (yup, I is a road racer but not in this car!).

My question is: Would I see another small improvement if I added a Panhard rod or would that only be noticeable in high speed cornering considering the buggy spring locating?

 

You mean to mount it on the axle on the drivers side or on the frame?