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Speedmaster Cylinder Head Kit Oldsmobile 400/425/455


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Cylinder Head Kit Oldsmobile 400/425/455
3 left in stock
Cylinder Head Kit
  • Oldsmobile 400/425/455
  • Aluminum Cylinder Heads
  • Gaskets: Head/Intake Manifold/Exhaust Header/Valve Cover
  • Head Bolt Kit
  • Rocker Arm Studs
  • Rocker Arms
  • Pushrod Guide Plates
  • Free Shipping - Ships

    PCE281.2152K is rated 3.0 out of 5 by 1.
    Rated 3 out of 5 by from push rods and guide plates that come with the kit do not work with these heads.
    Date published: 2021-05-13
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    Do these heads have the Carb heat crossover blocked ?

    Asked by: ROB0979
    The heads on the Speedmaster 746-PCE281.2152K do not have a heat crossover.
    Answered by: jshook
    Date published: 2023-11-08

    Will these heads fit any 455 ? Also do the valves come installed and what about lifters, does kit include new hyd lifters ? if not please recommend brand etc. to use. What is the max valve lift and dia of the intake and exhaust ?

    Asked by: paulej
    This kit is no longer available from the manufacturer.
    Answered by: Rusty B
    Date published: 2023-02-04
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    Related Products

    Kit Includes:Dart Small Block Chevy SHP Cylinder Heads With 180cc Intake Ports (2) -301-127122JEGS SBC Head Bolt Kit -555-8340Fel-Pro SBC Steel Wire Ring Head Gaskets -375-1003JEGS SBC Exhaust Header Gaskets -555-210050JEGS SBC Cork Rubber Valve Cover Gaskets -555-210075. 180cc Intake ...
    Speedmaster cylinder head fasteners are made from aircraft quality 8740 high tensile strength chromoly steel and cold-forged to ensure molecular integrity. They are heat-treated prior to thread rolling and machining and are rated at a whopping 190,000 psi. All kits ...
    Special Note: Camshaft and Lifters Not IncludedAssembly SpecificationsMax Lift: .580Coil Bind: .740Intake Install: 145lbs @ 1.9Exhaust Install: 145lbs @ 1.9Closed Seat Pressure: 145lbsOpen Seat Pressure: 360lbsAs with all Speedmaster cylinder heads, our Big Block Chevrolet heads are Gravity Die Cast ...

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