Dyno Cams Camshaft 308 Grind, Welded Lobe, GX390, Predator 420cc
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Dyno Cams Camshaft 308 Grind, Welded Lobe, GX390, Predator 420cc

$143.77
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The 308 is a great all-around cam. It features a wide powerband and great "pulling" characteristics. Upgrading the valve springs are mandatory. If your rules allow, upgrading to a billet connecting rod and flywheel is also mandatory. A carb with a 1.33" or 34mm venture is recommended. The use of big valves is highly recommended. The lobes are welded to increase durability, extending the life of this cam. Specs Engine: 390cc OHV Clone 13HP Recommended Class: Modified Target (MAX) RPM: 7200 Spring Pressure (In / Ex): 48-50 lbs Dual Spring Valve Lash (In/Ex): .003" Ignition Timining: Pump Gas Not Recommended 110 Octane 32 Deg BTDC Methanol 36 Deg BTDC Compression Ratio: 12 to 1 Profile Intake Exhaust Open: 53.5 BTDC 91.0 BBDC Close: 91.0 ABDC 55.1 ATDC Lift: .308" .308" C/L: 108.0 ATDC 108.0 BTDC DUR @ 50: 244.2 Deg 244.6 Deg

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