I am getting vibration starting @ about 2500 rpms in my 61 apache. I swapped out the 235 and put in a 350 crate engine. Am still using original 3 sp tranny and rear end. Am using flywheel from 1961 283 v8. This is what I have done so far. Put on new wheels and had balanced, had a flat spot on drive shaft so took it to machine shop and had tube replaced, has new u joints. Vibration is not coming through steering wheel.
