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Crane Cams 803901

PowerMax Hydraulic Flat Tappet Cam Only Lift: .456"/.484"

Crane Cams 803901

271-803901

made in usa
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Crane Cams 803901 PowerMax Hydraulic Flat Tappet Cam Only Lift: .456"/.484" $167.84
PowerMax Hydraulic Flat Tappet Cam Only
  • Lift: .456"/.484"
  • Duration: 260°/272°
  • RPM Range: 1200-4800

  • Crane Cams 803901 Details

    Oldsmobile 260-455ci V-8 1967-90

  • 39° Bank Angle Engines
  • Also fits 1966 400ci & Toronado 425ci

    *Note: If your hydraulic lifter preload is excessive, this can be easily remedied by using Crane's rocker arm bridge shim kit 270-99179-1.

    **Note: 1985-90 307ci engines are 39° bank angle and are equipped with hydraulic roller camshafts and lifters. Lifter diameter is .921". Conventional hydraulic, mechanical, or roller camshafts and lifters can be installed in these engines if a thrust spacer is fabricated and the appropriate kit components are used.

    ***Note: Since 1975 General Motors divisions have exchanged engines throughout different models (ex. 350ci Chevy engines in Oldsmobile cars). Be certain of exactly which engine you have before ordering.

    SMOOTH IDLE, DAILY USAGE, OFF ROAD, TOWING, ECONOMY, ALSO MILD TURBOCHARGED, 2200-2600 CRUISE RPM, 8.0 TO 9.5 COMPRESSION RATIO ADVISED.

    Grind Number: H-260-2 (Replaces HMV-260-2)
    Operating Range:1500-4500 RPM
    Duration Advertised:260° Intake / 272° Exhaust
    Duration @ .050'' Lift:204° Intake / 216° Exhaust
    Valve Lift w/1.6 Rockers:.456'' Intake / .484'' Exhaust
    Lobe Separation Angle:112°
    Max Lift Angle:107° ATDC Intake / 117° BTDC Exhaust
    Open/Close @.050'' Cam Lift:Intake - (5°) ATDC (opens) / 29° ABDC (closes)
    Exhaust - 45° BBDC (opens) / (9°) BTDC (closes)

  • Crane PowerMax cam and lifter kits feature cams with lobe patterns designed to balance intake and exhaust flow. Their unique profiles produce maximum low, mid, and upper rpm power. Many PowerMax cams are designed to maximize the effects of nitrous oxide, supercharger, and turbocharger systems. These kits are available in both hydraulic and mechanical lift versions and are also available without lifters packaged as "Cam Only".

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