i have an 01 cobra completely stock just bought it.when you shift it makes like a thud in the rear i heard that its bc of the sucky small gear 3.27's and a big engine help please

 

You can compress the bushings in the pinion nose a bit more by shortening the steel tube in the centre by a few mm or buy some poly bushings from MM or Steeda.

If you do the poly bushings on the pinion nose, replace the rear bushing as well to even out the load on the 3 mounts.

Also, make sure your rear spindle is okay... That can also cause the clunking noise.

Finally,it could bethe stock CV joints, Before I replaced my 1/2 shafts w/ DSS ones. I looked under the car and found I had quite a bit of slop in the stock CV joints.

I replaced the 1/2 shafts and the clunk has been gone ever since.

Some stock 1/2 shafts have very good tolerences and do nothave this problem. Others do.

 

Check the tranny mount as well.

 

If you hear it in the rear, it is NOTtranny mount... You will notice the shifter moving tooo too much, if it was a tranny mount.

 

when i shift at really high RPMs my car POPS really ****ing loud(occasionally not all the time)like coming out of the tails... wtf is that lol.

 

Bump. Any answers?

 

can you try to explain the pop..i have a twin disk clutch solid rear solid bushings and 3.73 and 315s and mine clunks at 3000k rpms like your power shifting at 6000k rpms...if its a pop sounds like a ripped bushing that pops in and out