This cam is used in mild modified applications. It will require an upgraded spring package, billet rod, and billet flywheel.
The lobes are welded to increase durability, extending the life of this cam.
Product Specs:
Engine: 390cc OHV Clone 13HP or 301cc Predator Engine 8HP
Recommended Class: Modified
Target (MAX) RPM: 6500
Spring Pressure (In / Ex): 32 lbs Single Spring
Valve Lash (In/Ex): .003″
Ignition Timing:
93 Octane 28 Deg BTDC
110 Octane 32 Deg BTDC
Methanol 36 Deg BTDC
Compression Ratio:10.2 to 1
Grind Number : 275
Recommended Class: GX-390 Mild Modified
Valve TimingIntakeExhaustOpen50 BTDC88.5 BBDCClose 88 ABDC50.0 ATDCLift.276.276C/L108 ATDC110 BTDCValve Lash.003.003Check lash when engine is cold