1986 Nissan 300ZX • 6 cylinder 2WD Manual • 165,000 miles

I have an 86 nissan 300zx turbo, picked up for $400 needs quite a bit of maint. I noticed upon driving the first time theres a thump in the rear end every time I change gears. It sounds like im running over a pot hole. It does not do it in first from a stoped position but from 1st to 2nd and so on. Any info on this would be helpful thanks.
July 5, 2011.

Check out the related content below while we wait for the question to be answered by a professional mechanic.