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Product Summary

396, 402, 427, 454, 496, 572, Aluminum, Natural

    Key Specs

    Cylinder Head StyleAssembled
    Material TypeAluminum
    FinishNatural
    Combustion Chamber Volume110cc
    Intake Runner Volume290cc

    Need To Know

    This Product Will Ship Free

    Quick and Easy Returns

    Details

    The Edelbrock #60455 Performer RPM O-Port cylinder heads are designed for Big-Block Chevy applications. The Edelbrock #60455 Performer RPM heads are perfect for street performance, daily drivers, street rods and muscle cars where seat-of-the-pants performance is needed. These cylinder heads deliver great throttle response and power from 1500 to 6500 rpm. They also feature the highest quality intake and exhaust valves and valve springs. For use on pre-pollution controlled vehicles only.

    • Out-of-the-Box Bolt-On Performance
    • Designed For Street/High Performance Big Blocks
    • Specially Designed Oval Ports
    • Increased Flow And Velocity
    • Highly Efficient Semi-Open Style Chamber
    • High Velocity Short Intake Ports

    Charts

    CARB Warning

    For race/ off road use or for use on pre-1966 vehicles.

    Emissions warning: this part only legal for sale or use in California for racing (competition) vehicles which may never be used, registered, or licensed for use upon a public highway, or if installed in vehicles model-year 1965 or older; motorcycles model-year 1977 or older; or off-highway recreational vehicles (such as off-road motorcycles and all-terrain vehicles) model-year 1996 and older. Any other use renders the vehicle tampered and not legal for use on California public highways (any public street or roadway, public dirt road, public park, or publicly maintained right of way open to the use of the public for vehicular travel). Violations subject to $37,500 penalty per violation per vehicle, revocation of registration, loss of use on California public right of ways, and proof of correction for tampering. There are similar restrictions and penalties under federal law and the laws of all other states with penalties under federal law of up to approximately $45,268 per tampered vehicle and/or engine.

    Specifications

    KEY SPECS
    BrandEdelbrock
    Cylinder Head StyleAssembled
    Material TypeAluminum
    FinishNatural
    Combustion Chamber Volume110cc
    Intake Runner Volume290cc
    GENERAL
    Exhaust Runner Volume110cc
    Combustion Chamber Volume Range110cc - 119cc
    Intake Runner Volume Range290cc - 299cc
    Exhaust Runner Volume Range110cc - 119cc
    Combustion Chamber StyleSemi-Open
    CNC-Machined RunnersNo
    CNC-Machined Combustion ChamberNo
    Intake Port ShapeOval
    Intake Port LocationStandard
    Exhaust Port ShapeSquare
    Exhaust Port LocationStandard
    Intake Valve Diameter2.190"
    Intake Valves IncludedYes
    Intake Valve Angle26
    Exhaust Valve Diameter1.880"
    Exhaust Valves IncludedYes
    Valve Spring IncludedYes
    Spring Diameter1.550"
    Damper Spring IncludedYes
    Number of Springs Per ValveDual
    Maximum Lift0.775"
    Machined for O-RingNo
    Valve Seat Machine Style3-angle
    Valve Seats MachinedYes
    Valve Seat MaterialDuctile Iron
    Valve Stem Seals IncludedYes
    Valve Stem Seal TypePositive Stop
    Valve Guides IncludedYes
    Valve Guide MaterialManganese Bronze
    Locks IncludedYes
    Lock Style7 Degree
    Retainers IncludedYes
    Retainer MaterialSteel
    Guideplates IncludedYes
    Guideplate Pushrod Size0.375"
    Rocker Arms IncludedNo
    Rocker Arm Studs IncludedYes
    Rocker Arm Nuts IncludedNo
    Oiling StyleThrough Pushrod
    Heat CrossoverNo
    Steam Holes DrilledNo
    Accessory Bolt Holes DrilledYes
    Valve Cover Mounting StylePerimeter Bolt
    NotesUses 14mm spark plugs with 3/4" reach, and flat gasket seals
    Sold in QuantityEach
    GTIN Code085347604555