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Camshaft, Dyno Cams P-Open, GX390 & 13/15hp Chinese OHV
Camshaft, Dyno Cams P-Open, GX390 & 13/15hp Chinese OHV


 
Our Price: $143.77
Thanksgiving Sale $129.39
Savings: $14.38

Stock Status:In Stock
Part #: DYNOPOPEN-390
Qty:

Description -
 

DYNOPOPEN-390

The P-Open is intended for a full tilt modified or open class. This cam offers larger duration with a lower lift. Upgraded valve springs, billet rod, and billet flywheel are mandatory. Dual springs required. A 33mm or larger carb is recommended. The lobes are welded to increase durability, extending the life of this cam.

SPECIFICATIONS

· Engine: 390cc Honda GX390, 420cc Predators, & 13/15hp Chinese OHV

· Recommended Class: Modified / Open

· Target (MAX.) RPM: 8000+

· Spring Pressure (In / Ex): 65lbs dual spring

· Valve Lash (In/Ex): .003"

· Ignition Timing: 110 Octane 34 Deg. BTDC, Methanol 38 Deg. BTDC

· Compression Ratio: 12.5-to-1 or higher


PROFILE

Intake

Exhaust

Open:

71 BTDC

89 BBDC

Close:

88 ABDC

50 ATDC

Lift:

.363"

.367"

C/L:

106.0 ATDC

110 BTDC

DUR @ 50:

263 Deg.

269 Deg.


*As this is a special order item, please allow 5-10 days before shipping.


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