Quote:
Originally Posted by HandOverFist
I need to purchase a flexplate and have noticed two different configurations for a C4...one with a single step and the other with a dual step. What/why the difference and which do I need?  |
What brand did you notice a difference?
Depending on the bell housing you use, you need either a 157 tooth flex plate (typically 302) or the 164 tooth (typically 351). You probably need a 157 tooth flywheel, but I would check with dynamic to be sure.
I'll assume that you internally balanced the engine, otherwise you would need to consider two choices of imbalance, 28 oz. or 50 oz. I'm surprised that when you had the engine balanced, the machinist didn't ask for a flex plate.
Regardless, get a decent 157 tooth flex plate (again, depending on bell housing used) and just go with it. You can probably get one from whoever you choose to make your converter.