this is my soon to be rx-7, with an LT-1 that puts down 365 wrhp. the only problem is, there is a lot of gear noise in the cabin of the car when accelerating or decelerating. the owner says its because of the full poly bushings in the rear and the bracing to support the power. my question is would that really be the problem or could it be bigger issues. it has a T-56 tranny and a fully rebuilt T-II rear with 4:11 gears, also it has a custom aluminum driveshaft as well.

 

the problem is that it has a LT-1 impala motor. and your car will never be the same again

 

tried to load some pics but wont work

 

Pics no workie.

Gear noise is probably just from the T-56. Put some dynamat in if you're worried about noise....

 

t56s are known to be noisy, but the poly bushings are probably adding to the noise

 

so some dynamat in the tranny and going back to the rubber bushings should help then, correct? would going back to the rubber bushings be a bad idea with the HP the car makes? thanks for the help.

 

http://cgi.ebay.com/ebaymotors/1990-...QQcmdZViewItem

Not that I support V8 swaps, but if you're gonna do it, it should be done like this.

 

thats the one im getting its like 10 min from where i live. it just has some issues with the vibrations and grinding noise in the cabin. i would like to find the problem and get it fixed as soon as possible. my wife and i have both test driven the car and love it.

 

Put it some dynamat and change out the diff bushing to a OEM one. Thats should help a bit.