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View Full Version : Clunk Noise


Naf
02-03-2009, 03:19 PM
Have you ever wanted to know where the clunk noise came fromm when you released the clutch. WELL my friend i am about to share my wisedom with you...

If you were to ever look under the car you will see the followin,

Engine, Transmission, Driveshaft and Diff

So lets look more closely...The engine is on Rubber mounts, maybe its comin from there, well not really but another issue will arise from that...

Its not comin from the tranny for its not hittin anything as it turns due to torque...

That leaves you with the Diff. The clunk comes from a silly rubber bushin from the front passenger side mount. Its a pathetic GM attempt to make right what is wrong. Instead of a Poly urethane bushin they went cheap. well there is a fix, and it doesnt transmit more then 10-20% of road noise. Not to mention it helps minimize diff movement and ultimately failure...

I hope i have helped you out with your ride

Naf

ls6ctsv
10-28-2009, 06:17 PM
What did you replace them with (make) and difficult to install?
thanks

Naf
05-01-2011, 06:02 AM
I replaced the Clutch with a LS7 clucth, which you will also need to get the LS7 slave. The driveshaft i couldnt touch, but the diff has a mod from Lindsay Cadillac, talk with Luke.

I also upgraded the Engine and tranny mounts to Poly to help counter effect the power torsion effect