Dan, that's good information- - - -which I've had in my shop specification manuals for over 40 years. I'm looking for the diameter of the OIL SEAL area of the small block V8 crankshaft- - - - -where the 2 piece rear main seal rides. I just don't have a small block V8 crankshaft handy to measure right now without tearing down an engine!

Edit:- - - - -got the dimension from my friendly local engine machinist- - - - -2.431 inches. Now I need to measure a GMC seal surface to see how close that size is. I can use a tool post grinder in a conventional lathe to size the crankshaft, and make an aluminum carrier for the seal to fit the engine block.
Jerry

"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
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