The rear main cap and block are machined to accept a big block Chevy rear main seal. Naturally, there is a wider selection of seals for a Chevy and this eliminates the rope-style seal of the Olds. Now we can get the proper seal for running a vacuum pump.

You don't get to see crankshafts very ofter and I thought we all needed to see what American-quality can produce. The Bryant Crankshaft is a piece of work. Every measurement was exact and the finish was superb. Can't think of a better way to start the foundation of a powerful engine.