Dedicated to the Promotion and Preservation of American Muscle Cars, Dealer built Supercars and COPO cars. |
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#11
03-01-2016, 11:38 AM
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Re: FORGED LT1 CRANK?
010 block was cast in both Saginaw and Tonawanda - made off of different masters, so core and mold equipment varied slightly in non qualified areas. No high nickel. Cylinder and bearing cap iron was all high(er) chrome to refine the grain structure & get to 30,000 psi strength (UTS). Normal gray iron (we called it piston iron at the plant) was 25,000 psi strength (UTS). Of course, running changes were made to the equipment at both plants between 1969 and 1973.
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Threaded Mode