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forgot to mention i am considering these patriot performance heads heres the specs
Combustion Chamber: 64cc
Intake Runner: 185cc
Exhaust Runner: 60cc
Intake Valve: 2.02"
Exhaust Valve: 1.60"
Max. Valve Spring Lift: 0.575"
Spring Pressure Closed: 115 lbs. @ 1.800"
Spring Pressure Open: 310 lbs. @ 1.225"
Retainer Material: Steel
Valve Seal Material: Viton
Valve Job: 5-angle
Material: Cast Iron
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