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Speedmaster Big Block Chevy Aluminum Cylinder Heads 119cc / 320cc A/Plug Hydraulic Flat Tappet Complete Heads

Speedmaster PCE281.2031

746-PCE281.2031

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Speedmaster Big Block Chevy Aluminum Cylinder Heads 119cc / 320cc A/Plug Hydraulic Flat Tappet Complete Heads $1,055.80
Big Block Chevy Aluminum Cylinder Heads 119cc / 320cc A/Plug
  • Hydraulic Flat Tappet Complete Heads
  • Sold as a pair

  • Speedmaster PCE281.2031 Details

    Big Block Chevy Aluminum Heads

  • 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 Sear Pressure: 110 lbs
  • Open Seat Pressure: 300 lbs

  • Specifications:

    Manufacturer's Part Number:
    PCE281.2031

    Speedmaster offers a wide variety of aluminum and cast iron cylinder heads for both race and mild street applications. Speedmaster heads are available bare and fully assembled.

    All Speedmaster aluminum cylinder heads feature the following:

    • High Grade Aluminum
    • Bronze Valve Guides
    • Hardened Seats
    • Advanced Port Design for greater flow
    • Multi angle seat design for performance valve springs

    JEGS Easy Kits are designed by JEGS high performance racing professionals to help you get all the performance parts you need for your race car, hot rod or truck. https://www.jegs.com/p/JEGS-Performance-Products/JEGS-Tool-Boxes/3669780/10002/-1

    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: 2018-02-24

    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
    • y_2018, m_8, d_14, h_24CST
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    Some parts are not legal for use in California or other states with similar laws / regulations