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Crane Cams 138291

Mechanical Roller Camshaft 1967-95 Big Block Chevy 396-454

Crane Cams 138291
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271-138291

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Ships 12/14/16 if Ordered Today
Crane Cams 138291 Mechanical Roller Camshaft 1967-95 Big Block Chevy 396-454 $411.64
Mechanical Roller Camshaft
  • 1967-95 Big Block Chevy 396-454
  • Gross Lift: .737"/.726"
  • Advertised Duration: 314°/324°
  • RPM Range: 4600-8000

  • Crane Cams 138291 Details

    Big Block Chevy

    Performance usage, good mid range torque and HP, 480+ cu.in., bracket racing, auto trans w/4000+ converter, 11.5 minimum compression ratio advised. Good w/large manifold nitrous system. Good w/large Roots supercharger, 20 lbs. maximum boost w/8.0 maximum compression ratio advised.

    Grind Number: R-274/4334-2S-10
    Operating Range:4600-8000 RPM
    Duration Advertised:314° Intake / 324° Exhaust
    Duration @ .050'' Lift:274° Intake / 284° Exhaust
    Valve Lift w/1.7 Rockers:.4334'' Intake / .427'' Exhaust
    Max Lift Angle:105° BTDC Intake / 115° BBDC Exhaust

    Designed for operation at ranges that can exceed 10,000 RPM, mechanical roller cams represent the ultimate in efficiency. While a large number of mechanical roller cams are used in purely competition applications, Crane Cams does manufacture less severe roller grinds that are designed for high performance street engines that have higher compression or power-adders. For best results, valve lash must be checked and set periodically.

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