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  1. HHP 6.4 392 Head And Cam Results: +85rwhp

    High Horse Performance
    We finished up this 392 Ported Heads and Camshaft package vehicle back in December on a 2012 Chrysler 300C SRT-8. The heads are stock 6.4L heads that have been CNC ported and upgraded with PSI Springs, Manley retainers and locators. The Cam is the Comp Cams 274 limiter camshaft and we also used...