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Old 06-19-2010, 05:18 PM
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Third, do yourself a favor and get a good book on hotrodding chevy engines. You will discover that raising or lowering the compression ration does not make that big of a hp difference. You gain a whopping 4% hp increase with a full point increase of compression. On a 400 hp engine that equates to 16 hp. Milling heads has it's limits as you can mess up the angles of the mating surfaces between heads and intake manifold. Not worth it. Get Lingenfelter's book on "How to Hot Rod Small Block Chevy Engines".
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