I built a 1950 chevy pickup hot rod with a bb402 and 5 speed trans and ford 9" rear. I've always had horrible problems if I tried to spin the tires on dry pavement with what I thought was axle hop. I have a tri 4 link with coil overs, and I recently did a lot of work to the rear and added a panhard bar and rear sway bar. So after all that I went out thinking I solved the problem and still had major problems.
I asked a buddy of mine to come out with me one day with his camcorder and film my car doing a burn out so I could watch the axle in slow motion to try and figure out what is wrong, and I learned that the axle isn't moving at all, but from inside the car it shakes horribly. The whole cab starts shaking so violently that I can barely even hold onto the stick, and I immediately get off the gas so as not to break something.
I guess the issue is the engine/trans shaking when doing a burnout, but it is mounted properly and I've checked all my welds and mount points and nothing is bent or cracked.
Does anyone have any idea what I can do, or what the actual problem is here????