Dyno Cams Camshaft 356 Grind, Welded Lobe, GX390, Predator 420cc

The 356 is capable of extreme RPMs. With its early valve opening, larger lift and wider duration, it's a proven winner. Upgrading the valve springs, a billet connecting rod, and billet flywheel are mandatory. A carb with a 1.41" or 36mm venture or larger is highly recommended. The use of big valves is also recommended.
The lobes are welded to increase durability, extending the life of this cam.

Specs
Engine: 390cc OHV Clone 13HP
Recommended Class: Modified / Open
Target (MAX) RPM: 7600-7800
Spring Pressure (In / Ex): 65 lbs Dual Spring
Valve Lash (In/Ex): .003"
Ignition Timining: Pump Gas Not Recommended
110 Octane 34 Deg BTDC
Methanol 38 Deg BTDC
Compression Ratio: 12.5 to 1 or Higher

Profile
Intake Exhaust
Open: 51.6 BTDC 94.0 BBDC
Close: 93.5 ABDC 54.8 ATDC
Lift: .3555" .3555"
C/L: 108.0 ATDC 108.0 BTDC
DUR @ 50: 254.3 Deg 254.5 Deg