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Old 07-10-2012, 04:03 PM
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My thoughts are... with that valve size and heads not fully ported, he is 100hp too optimistic,... with even the best Super Stock port job at that valve size he is 40-50 hp optimistic.

A set of Dart 215's or similar heads that will flow somewhere close to 250cfm at .550" valve lift on the intake and his guess would then be closer to correct.
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