Some of you were complaining of your rear differential making metallic grinding/creaking noises when going over bumps or taking curves. Same here, so I replaced the upper control arms with the FRPP ones and the upper bushings attached to the pumpkin with new stock ones. It turns out the pumpkin's upper bushings were shot! I bought a nifty tool ($38.00) from stangsuspension to remove the bushings and also installed them with the same tool. What a difference! I no longer have creaking noises emanating from the back and the back end feels much firmer. According to some suspension sites, you should use stock bushings on the uppers since stiffer aftermarket ones will bind too much and destroy your torque boxes. If your car is several years old, this is a must do.
Rear end grind/clunk noise gone..
- Thread starter Mel96GT
- Start date
Tim2002GT
Founding Member
For the bushings that are actually in the axle where the upper control arms connect, I've heard from a few different sources that it is best to use rubber/factory bushings in there because it will help keep the road feel proper. In other words, with a fully poly rear end, there is a tendency not to be able to feel that the car is going to lose it until you are losing it.
Havn't heard anything about the torque boxes, I wana check into that now...
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