Got the motor in yesterday and went to bolt up the tranny and found the engine builder supplied the wrong flexplate...it's about 2" larger in diameter and won't clear the starter. I assume it's for a standard small block Chevy or a 4L80E?

Anyway, does anybody know where I can get a good one quick? The motor was balanced with it, and it still has a large weight on it, so I'm assuming it's still externally balanced and I can just get a standard LT1 version; I'm waiting on a call back from the builder now. Should I take the wrong flexplate to a machine shop and have the new one balanced to it?

 

Found some info in the drivetrain forum...didn't even know we had one! If anyone has any additional info on this subject or part sources, feel free to speak up though. Thanks!