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Small Block Chevy 5 Stage Build

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For Stages 2-5, two different Thumpr camshafts were used: the Thumpr, and the Mutha Thumpr, which features slightly larger specs than the first (see sidebar).
Small-Block Chevy 5 Stage Build - Waking Up The ZZ4

 For Stages 2-5, two different Thumpr camshafts were used: the Thumpr, and the Mutha Thumpr, which features slightly larger specs than the first (see sidebar).  View Related Article

 

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