Name: New 😀 BMI Dyno Cams 275 Grind For 13HP Honda GX390 Also Works On 8HP 301cc Predator ✔️
SKU: 275-GX390
Availability: InStock

New

Original price was: $140.95.Current price is: $91.99.

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 Timing
	Intake	Exhaust
Open	50 BTDC	88.5 BBDC
Close	88 ABDC	50.0 ATDC
Lift	.276	.276
C/L	108 ATDC	110 BTDC

Valve Lash	.003	.003
Check lash when engine is cold