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Speedmaster CNC Aluminum Cylinder Heads Big Block Mopar 383/440 w/Hydraulic Roller Cam

746-PCE281.2153


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CNC Aluminum Cylinder Heads Big Block Mopar 383/440 w/Hydraulic Roller Cam
CNC Aluminum Cylinder Heads
  • Big Block Mopar 383/440 w/Hydraulic Roller Cam
  • Assembled Head
  • 74cc Combustion Chamber
  • 265cc Intake Runner
  • Includes Valves & Springs
  • Set of 2
  • Currently unavailable.
    This product is not available, please call customer service for options, at 1-800-345-4545.

    Can I use .525 lift solid lifter flat tappet cam with these heads. Also what do they mean by .450 offset intake valve?

    Asked by: Arynot
    The Speedmaster 746-PCE281.2153 cylinder head does not work with flat tappet cams.
    Answered by: jshook
    Date published: 2023-03-09

    are they made in the us

    Asked by: nick b
    No, these are not made in the USA.
    Answered by: Rusty B
    Date published: 2018-05-25

    What seat pressure do the springs come set at. Do these require offset intake rockers?

    Asked by: FCC17
    Speedmaster says these are 120lb springs and don't require offset rockers.
    Answered by: Jon Jegs Tech
    Date published: 2022-08-24

    Hyd-r Does this mean hydraulic lifter?  Are they built in the United States? 

    Asked by: 34 Swirls
    Yes the springs assembled with the head accommodate a .650" lift roller cam.
    Answered by: Dean R
    Date published: 2018-01-13
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