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
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96'Gt 5 speed
pi swap, forged pistons,VT stage 1 cams, Steeda tri-ax o/r H with flowmasters 40, 75 mm tb and pp plenum, k&n cai,4.10's
Next: suspension, traction
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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.
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'99 SVT Cobra #2085 - MAC Cat-Back, MAC O/R H, C&L Intake, Steeda Sport Springs, Steeda Diff Bushings, Bilstein Cobra R Shocks, Koni Sport Adjustable Struts, B&M Pro Ripper Shifter, UPR Clutch Quadrant/Adjuster, Steeda UDPs, Custom Tuned by Tillman Speed - One of 223 in Electric Green and Medium Parchment
Rear thud?
