Jsonchevz

iTrader: (1)

Ok guys give me some help here I have a question regarding my 85 Iroc Z I changed U joints and now the stupid thing ahs a vibration above 55 I've think I have checked everything but give me some advice as to what could cause this this is speed related not RPM related or anything and it dosen't matter what gear I'm in as long as it's above 55 below that car drives and runs great
has a t5 and a transplanted 350 with a holley and a decent size cam and headers and full flowmaster ex with no cats whats up oh yeah and the stock rear end

EPP

iTrader: (22)

Try removing the driveshaft and rotate it 180 degrees and reinstall it. While you are at it, make sure the U Joint caps are free. Bob