Rebuilt Motor Vibrating Bad
Hey guys. My engine builder finally got done with the 383 install on my camaro. Unfortunately, the motor seems to be vibrating badly. The block and internals have been balanced at a local machine shop. They flywheel wasn't since it is stock and internally balance. I've also got poly motor mounts on the car. My builder says it could possibly be the mounts, but the vibration is so bad that he kind of doubts it. We plan to start with replacing the mounts back with the stock ones and if that's not it we plan on checking the flywheel. Worst case scenario it could possibly be the crank. BTW, the crank is a forged Eagle piece. Another interesting thing is that it seems the pulleys chewed up the serpentine belt and my said that might be due to the fact the balancer didn't seem to fit quite right. Any insight as to what the issue maybe would be greatly appreciated.
'96 Camaro Z28, 383 stroker, Crane Gold 1.6 rr's, M6 swap, 3.73 gears, Moroso CAI, BBK 58mm TB, Ported/Polished intake manifold, Ported/Polished stock heads, LE custom cam, LPP LT Headers, 32lb Accel injectors, Detroit Locker posi trac, Eibach lowering springs, torque arm bar.