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COMP Cams 51-243-5

Drag Race Hydraulic Flat Tappet Camshaft Lift: .594"/.594" Duration : 268°/268° RPM Range: 4000-6700

COMP Cams 51-243-5

249-51-243-5

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Ships 12/13/16 if Ordered Today
COMP Cams 51-243-5 Drag Race Hydraulic Flat Tappet Camshaft Lift: .594"/.594" Duration : 268°/268° RPM Range: 4000-6700 $194.99
Drag Race Hydraulic Flat Tappet Camshaft
Lift: .594"/.594"
Duration :268°/268°
RPM Range: 4000-6700

COMP Cams 51-243-5 Details

Pontiac 265-455ci 1955-81

  • Drag Race Xtreme RX Camshaft
  • 1 Year Limited Warranty

  • Specifications:

    Exhaust Valve Lift (in.)
    0.594
    Intake Valve Lift (in.)
    0.594
    Exh. Duration @ .050 in. (Deg)
    268
    Int. Duration @ .050 in. (Deg)
    268
    Exh. Duration Advertised (Deg)
    320-5
    Int. Duration Advertised (Deg)
    320-5
    RPM Range
    4000-6700
    Lifter Type
    Hydraulic Flat Tappet
    Engine Make/Size
    Pontiac 265-455
    Usage
    Strip
    Manufacturer's Part Number:
    51-243-5

    A popular street camshaft used with pre 1985s original overhead valve OEM engines, the hydraulic flat tappet cam is commonly used in up to mildly aggressive performance profiles. The flat tappet lifter has a flat appearing base (this surface is actually slightly crowned) that rides on the cam lobe face, rotating slowly within the lifter bore to promote proper oiling. Internally, the lifter features a cavity that fills with oil and a piston that is depressed by the pushrod (and valve spring). This "hydraulic chamber" provides a cushion of fluid to soften the impact on the valve train, creating room for expansion as the engine reaches operating temperature. Hydraulic flat tappet camshafts deliver quiet operation at street to mild racing engine speeds. The biggest advantage to hydraulic flat tappet lifters is that they do not require constant maintenance to ensure proper valve lash. Hydraulic flat tappet camshafts/lifters are pre-loaded at initial start-up and require little, if any, maintenance from that point forward. Flat tappet lifters can only be used once per camshaft and must be replaced due to wear patterns created by the direct contact of the cam with the lifter base.

    Features:
  • Wide assortment of racing camshafts for all application requirements of drag, oval track and puller & mud competitors
  • Require accurate assessment of rear end gearing and other vehicle-based equipment to deliver top performance
  • Not made for street use or vehicles requiring accessory drive equipment, such as power brakes, air conditioning, etc.

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