I've just lowered my camaro about 1.5" with DMS springs and installed lca brackets and subframes. Sometimes when I get one the gas hard after a second or two there is a loud thud in the back. It almost sounds hollow like the subframes or exhaust, but I'm going in a straight line for it shouldn't be a ground clearance issue, and there seems to be a lot of clearance on the exhaust (loudmouth). I don't really see any signs yet of where the contact may be coming from. Does anyone have any suggestions what could make contact under hard acceleration?

 

shocks could be bad

 

I hope not ... put in new bilstein HD's when I did the springs, guess it could have been bad from the factory

 

could be the tranny mount as the supension is still and has less give.

 

Were the Bill's re-valved to work with the shorter springs?

 

Id put money its your torque arm hitting the underside of the car. I've seen this happen a lot on 3rd gens, and the rear end on a 4th gen is identical.....look into it.

 

They weren't revalved but from everything I've read they should work stock. Or at least I haven't heard of similar problems

 

hmmmm...maybe...but still they may leak