[Grant Eldridge]

Aubrey, Rory had an important point in his post re/ the block dowels and crankshaft centre. No matter how precise the new bellhousing is, you have to dial it in mounted on your actual block. Even if the dowels were exactly correct originally, and you can't be certain without checking, subsequent align boring or factory machining tolerances could have affected the crankshaft centreline location. Similarly, the block face could be out unless you've had it machined off the crankshaft centreline so it's worth the effort to dial both the bellhousing bore and the transmission face of the bellhousing. The fact that they make the offset dowels indicates this can be a common concern, I think from distant memory that Lakewood might also have offered those dowels at one time in several different offsets. Make sure that the dowels are sticking out enough to properly index both the block plate and bellhousing. Occasionally they get driven in too far by accident at the machine shop when they stand the block on end on the shop floor.