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Intake runner volume 283cc Combustion chamber volume 64cc 13.5 deg. Valve angle 85/125 Valve spacing Intake Valve 2.170 dia. x 6.090 length Serdi # 1st cut: HP2681-B1 Serdi # 2nd cut: 75 deg.-B1 (50 deg. seat) Exhaust Valve 1.615 dia. x 6.090 length Serdi # 1st cut: B1X1-A1 Serdi # 2nd cut: H1X2-B1 (45 deg. seat) Raised intake runners 5 deg. Intake flange Spread port exhaust Intake port opening at gasket 2.14H x 1.42W Distance from floor to deck at gasket 2.02 Intake min. cross sectional dim. 2.83 sq. in. 5/16"
Pushrod use .650 offset rocker
3/8" Pushrod use .700 offset rocker .180 Offset lifters required Water openings on intake flange: -10AN Exhaust gasket Cometic C5422 Angle milling .0065 in. per cc Flat milling .0055 in. per cc |
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