Dyno Cams Camshaft 356 Grind, Tool Steel Billet, 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.
Tool Steel Billet cores are the best choice in high RPM applications.
The two piece design of the Tool Steel Billet core allows you to advance or retard the cam to meet your application needs.
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