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Thread: 1967 400 with 670 heads. Trying for 400 Hp street
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Old 07-19-2012, 06:16 PM
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The J317 date code is October 31, 1967, so it would have been cast for the '68 model year making it a 350. A .060 over 350 would make it a 365 using the stock 3.75" stroke crank. I also looked up the '68 YN code and it is a 2bbl, 265 hp, automatic block and would have had #17 heads.

Bill
Last edited by WDCreech; 07-19-2012 at 06:27 PM.
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