the 513 is, and only ever was, a bellhousing made to be used with a 130 tooth flywheel.
Yes but that doesn't answer the issue that is the subject of this thread.
The specific bellhousing used in a 1970 RR with big blocks AND hemis is the alum. 513 bell, which the OP confirmed is what he has, it takes a 130 tooth wheel ONLY. The 130 tooth wheel accepts the 10.5" pattern pressure plate, there is a scalloped version of the 10.5 pattern plate that accepts a 10.95" clutch disc.
I admit that I don't know the answer to Mikes problem I was just pointing out that the 513 is not the only bell out there that uses a 130 tooth flywheel.
