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Speedmaster PCE281.2031

Speedmaster Cast Aluminum Cylinder Head Big Block Chevy 454 w/Hydraulic Flat Tappet Cam

746-PCE281.2031

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$1,161.38
Speedmaster Cast Aluminum Cylinder Head Big Block Chevy 454 w/Hydraulic Flat Tappet Cam $1,161.38
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Cast Aluminum Cylinder Head
  • Big Block Chevy 454 w/Hydraulic Flat Tappet Cam
  • Assembled Head
  • 119cc Combustion Chamber
  • 320cc Intake Runner
  • Includes Valves & Springs
  • Set of 2
  • is this a set or one head? for 1055.80 .description says heads quantity says 1 and are they Orval port or rectangular, thanks

    Asked by: Hogg
    This is a pair of oval port heads.
    Answered by: Rusty B
    Date published: 2018-05-08

    is the valve stem diameter 11/32 or 3/8 on these heads?

    Asked by: blackcloud
    11/32 ''
    Answered by: SteveM
    Date published: 2019-03-26

    What is the pushrod length for this head?

    Asked by: Mehdi
    Many factors will determine the correct pushrod length, the block deck height , the head gasket thickness, and the lifter being used. We recommend measuring for the pushrod length after the head is installed.
    Answered by: Rusty B
    Date published: 2017-12-12

    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.

    Asked by: runningwithscissors
    We have not had any issues with the quality of the heads - It looks like the lift you are using is a bit over the recommended maximum for the springs that come on this head.
    Answered by: Rusty B
    Date published: 2017-12-04

    CAN YOU GET THESE HEADS WITH A HIGHER LIFT SPRINGS AND CAN YOU USE THE STOCK PUSH RODS AND PUSH ROD GUIDES.

    Asked by: greenman
    No, you would need to purchase the "bare" heads and add the components that you want for your application.
    Answered by: Rusty B
    Date published: 2017-10-16

    Does PROCOMP have BBC heads for roller cam? Can these heads be made to work with roller camshaft?

    Asked by: Lightftr
    For these heads to work with roller cam you must change the valve springs.
    Answered by: Jegs Tech
    Date published: 2017-08-29
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