Seller notes

This cam makes slightly more top end power than the 308 grind. This cam requires an upgraded spring package, billet rod, and billet flywheel.Engine: 13HP Honda GX390 SpecsEngine: 390cc OHV Clone 13HPRecommended Class: Modified / OpenTarget (MAX) RPM: 7500Spring 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: 12.2 to 1 ProfileIntake ExhaustOpen: 42.0 BTDC 78.0 BBDCClose: 83.5 AB...

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