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We swapped off our 1.5:1 aluminum-body Comp Cams roller rockers for Comp Pro Magnum series 1.6:1 rockers. The fact that our engine needed more camshaft resulted in 13 more peak horsepower.
Impersonator II

 We swapped off our 1.5:1 aluminum-body Comp Cams roller rockers for Comp Pro Magnum series 1.6:1 rockers. The fact that our engine needed more camshaft resulted in 13 more peak horsepower.  View Related Article

 

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