You gotta be kidding me - not one reply! Nobody has used a dial indicator to set the bellhousing on a drag car??? Maybe this will help:
Application:
twin blown 615ci Chev
dual cooler Mercury bellhousing
Bam Marine 1500hp dry sump BW 72c transmissions
dry sump #6 speedmaster
I want the bellhousing aligned so the transmission does not have to live with run-out