356 Grind, Tool Steel Billet, Clone 13HP
- 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.
|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|
|Open:||51.6 BTDC||94.0 BBDC|
|Close:||93.5 ABDC||54.8 ATDC|
|C/L:||108.0 ATDC||108.0 BTDC|
|DUR @ 50:||254.3 Deg||254.5 Deg|