I did an engine swap...Now i have a helish Vibration! of course my car is an auto. I used my flex plate and counter weight in the rear of the engine from my Old one!!. can this be the problem? anyone out there with any clue on this? i need fact on if all rear counter weights are the same! or maybe i have some other problem. thank you for your'e help



88 auto Gxl

 

So long as you stayed in the same series I don't think it should matter much... What kind of vibration are you getting?