Dedicated to the Promotion and Preservation of American Muscle Cars, Dealer built Supercars and COPO cars. |
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#8
02-22-2007, 04:47 AM
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Re: Block Casting Numbers
The 3969854 block was a 402. GM would not use the same
casting number on different c.i. displacements. The J-10-8 however is way too early for an '854 block as they came into production late in summer of 1969. Check that casting date again. Steve
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