Speedmaster Cast Aluminum Cylinder Head Big Block Chevy 454 w/Hydraulic Flat Tappet Cam
746-PCE281.2031
Product Q&A
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Big Block Chevy - Assembled
Special Note: Camshaft and Lifters Not Included
- Intake Valve: 2.250"
- Exhaust Valve: 1.880"
- Sold as a pair
- Max Lift: .550"
- Coil Bind: .740"
- Intake Install: 130 lbs @ 1.8
- Exhaust Install: 130 lbs @ 1.8
- Closed Seat Pressure: 110 lbs
- Open Seat Pressure: 300 lbs
Specifications:
is this a set or one head? for 1055.80 .description says heads quantity says 1 and are they Orval port or rectangular, thanks
is the valve stem diameter 11/32 or 3/8 on these heads?
I know Pro Comp initially used poor quality valves and springs in their pre-assembled heads. Has their quality improved? Would I be better off buying bare heads and building them from scratch? Engine is a 496 with a .575 lift flat tappet cam.
CAN YOU GET THESE HEADS WITH A HIGHER LIFT SPRINGS AND CAN YOU USE THE STOCK PUSH RODS AND PUSH ROD GUIDES.
Does PROCOMP have BBC heads for roller cam? Can these heads be made to work with roller camshaft?
Can you use stock rocker arms
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