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Question about Comp Cams Powerbox
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11-24-2001, 11:21 PM
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Unit 5302
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Join Date: May 1999
Posts: 5,246
With a stock engine, maybe 1-2 tenths. The intake is a little restrictive, but the heads are very weak too. The 5.0 is truely setup for what it's got from the factory. It's a pretty well matched combo.
Unit 5302
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