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Crane Cams 138141

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

Crane Cams 138141

271-138141

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Estimated ship date 10/04/17 if Ordered Today
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Crane Cams 138141 Mechanical Roller Camshaft 1967-95 Big Block Chevy 396-454 $457.98
Mechanical Roller Camshaft
  • 1967-95 Big Block Chevy 396-454
  • Gross Lift: .714"/.714"
  • Advertised Duration: 278°/288°
  • RPM Range: 3200-7000

  • Crane Cams 138141 Details

    Big Block Chevy

    Excellent mid range torque & HP, fair idle, performance usage, good w/manifold nitrous system, mild bracket racing, auto trans w/3500+ converter, 10.5 to 12.0 compression ratio advised. Good w/supercharger, 16 lbs. max. boost w/8.0 max. compression ratio

    Grind Number: R-246/420-2-14 IG
    Operating Range:3200-7000 RPM
    Duration Advertised:278° Intake / 288° Exhaust
    Duration @ .050'' Lift:246° Intake / 256° Exhaust
    Valve Lift w/1.7 Rockers:.420'' Intake / .420'' Exhaust
    Max Lift Angle:109° ATDC Intake / 119° BTDC 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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