Dyno Cams Camshaft MOD1 Grind, Welded Lobe, GX390, Predator 420cc
The MOD 1 features the same characteristics as our 308, with the addition of making more top end power. Upgrading the valve springs, a billet connecting rod, and billet flywheel are mandatory. A carb with a 1.33" or 34mm or larger venture is highly recommended. The use of big valves is also highly recommended.
The lobes are welded to increase durability, extending the life of this cam.
Engine: 390cc OHV Clone 13HP
Recommended Class: Modified / Open
Target (MAX) RPM: 7500
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: 12.2 to 1
Open: 42.0 BTDC 78.0 BBDC
Close: 83.5 ABDC 46.0 ATDC
Lift: .310" .310"
C/L: 108.0 ATDC 108.0 BTDC
DUR @ 50: 247.6 Deg 247.6 Deg