Speedmaster Cast Aluminum Cylinder Head Big Block Oldsmobile 400/425/455 w/Hydraulic Flat Tappet Cam
746-PCE281.2152
Items You Need
Oldsmobile - Assembled
Special Note: Camshaft and Lifters Not Included
- Intake Runner: 188cc
- Combustion Chamber Volume: 77cc
- Intake Valve: 2.072"
- Exhaust Valve: 1.680"
- Max Lift: .615"
- Coil Bind: .1.125"
- Intake Install: 140 lbs @ 1.8
- Exhaust Install: 140 lbs @ 1.8
- Closed Seat Pressure: 145 lbs
- Open Seat Pressure: 345 lbs
Specifications:
What type of intake manifold gasket is needed? Can the factory “bathtub” gasket or is something special required. The car is a collector limited use vehicle.
Do these heads have accommodations for factory brackets, I.e. alt, per steering and AC?
Can you pull shims to make heads work with a hydraulic camshaft?
Motor Vehicles
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Tools:
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Electrical Cords
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