Seller notes

This cam is easy on the valve train and has a very wide power band. This cam requires an upgraded spring package, billet rod, and billet flywheel.Engine: 13HP Honda GX390, Predator 420, DuroMax 420/440, and most 13 HP clone engines SpecsEngine: 390cc OHV Clone 13HPRecommended Class: ModifiedTarget (MAX) RPM: 7200Spring Pressure (In / Ex): 48-50 lbs Dual SpringValve Lash (In/Ex): .003"Ignition Timing: Pump Gas Not Recommended110 Octane 32 Deg BTDCMethanol 36 Deg BTDCCompression Ratio: 12 to 1 Pro...

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