Re: 1970 Z28 Flywheel Part Number
The flywheel in my 68 Camaro is 3973456 cast G 1 2 (1972). I have a 3789733 for it. Both of these are for an 11" clutch. I suspect these are the casting numbers that the others have. I don't know what is correct for 1970 but 3789733 was used at least until 1969. I agree that you need to find out what was on original cars.
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Martin Foltz
68 Camaro SS-396
L35/M20, Corvette Bronze, black vinyl top
George Olsen Chevrolet San Francisco
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