Stock valve springs
No way....4K and 45PSI is pushing the limits. I think may TJ had a video of him floating his stockers. It's got alot more to do with boost than you may think, Not just RPMS to consider here!
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POWERSTROKEMANIAC
24 Valve 2nd Gen Dodge Cummins 98.5-02
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Dec 30, 2014 11:32 AM





