All right, I know there are 157 tooth and 164 tooth flexplates. Generally, the larger one is used on AODs and old truck C4s. I have the larger bellhousing C4 with the truck converter behind the newer 50oz imbalance motor. I currently have the stock AOD flexplate in there. Here is the question, do all of the larger plates have the 11.5inch converter bolt pattern? In summit they list 11.5 and 11.423? Can anyone shed some light on this one! I can't measure it while it is in the car and I want to install the new one before I make the engine swap.
