Best Rear Main Seal

[Jim Brierley]

"A" motor with a turned down crank. Does that mean a B or C crank? Either one is better because of their strength resulting from larger bearings. If that is your intention, turn the mains to as large of a size that you can, to keep strength. 'A' main studs are 2" between them, there are bearings available with a 2" O.D. that will just barely fit when the block is bored, I think 1.7" (I.D.) bearings. Find available bearings before you start the engine build! Most of us Salt Rats use the C crank, many are now going to 5-main cranks and a girdle. Contact me if you think I can help. [email protected]