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According to "How to rebuild big block Ford engines" by Steve Christ, these heads are from 1961-63 352 or 390 with a 71.2-74.2cc combustion chamber. They are standard cylinder heads. The chart is on page 55. You would be better off using a set of Edelbrocks prepared by Barry, Brent or Keith. They will perform better on a 427 than the stock heads.
Last edited by Tom Cimino; 02-21-2012 at 08:46 PM..
Reason: Added text
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