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POpen Grind, Tool Steel Billet, Clone 13HP
POpen Grind, Tool Steel Billet, Clone 13HP
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POpen Grind, Tool Steel Billet, Clone 13HP

Item Number POPEN-GX390-TSB
Qty Break Price
1 $200.00
2 $190.74
3 $181.48
4 $172.22
5 and up $162.96

Description

  • The P-Open is our #1 camshaft that is intended for a full tilt modified or open class. This cam offers larger duration with a lower lift. If your looking for a great cam, look no further.
  • Upgraded valve springs, billet rod, and billet flywheel are mandatory. A caburetor with a 1.50" / 38mm venturi is 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:8000-8200
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:12.5-13.0 to 1 or Higher

Profile

IntakeExhaust
Open: 71.0 BTDC89.0 BBDC
Close: 87.8 ABDC50.0 ATDC
Lift: .363".367"
C/L: 106.0 ATDC110.3 BTDC
DUR @ 50:263.3 Deg269.0 Deg