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COMP Cams 12-418-8 - Camshaft CS XM 276HR-12

COMP Cams 12-418-8 - Camshaft CS XM 276HR-12

COMP Cams | 12-418-8
SKU: COMP-12-418-8
Regular price $586.99 USD
Regular price $645.69 USD Sale price $586.99 USD
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COMP Cams 12-418-8 - Camshaft CS XM 276HR-12

Xtreme Marine 224/230 Hydraulic Roller Cam for Chevrolet Small Block

Good for jet with A impeller, strong mid-range power, needs good exhaust.

Fits '58-'02 262-400 c.i.d. Chevy Small Blocks

  • Good for jet with A impeller - Strong mid-range power - Needs good exhaust
  • Xtreme Marineâ„¢ -Designed to maximize torque, acceleration and throttle response while providing excellent high RPM horsepower. A faster intake valve opening increases engine vacuum and enhances throttle response. Special intake closing ramps close the valve sooner, providing more cylinder pressure and torque without resulting in excessive valve train noise. Faster ramps achieve maximum velocity sooner, increasing the area under the lift curve and providing maximum horsepower. Smoother exhaust designs allow for a more effective purge of spent gasses from the combustion chamber to further increase horsepower. Feature CRC (Constant Radius of Curvature) Technology that ensures durability with aggressive hydraulic Roller designs.
  • WARNING: Camshaft Optimized for use with a Melanized or Nitrided distributor Gear. Not compatible with cast or Steel Gears without similar surface treatments. Failure to utilize the proper distributor Gear will void all warranties and/or return policies.
  • 1: Cams for '55-'57 engines can be custom ordered. 2: The '87+ Chevy Small Block received provisions for Roller lifters. Most '87 - '93 GM cars came with Roller lifters, but most '87 - '95 trucks came with flat tappet lifters in Roller lifter style blocks. If your block has '87+ OEM-style Roller Cam provisions but does not have Roller components fitted, COMP Hydraulic Roller Lifter Install Kit for '91-'02 Blocks can be purchased. As well as a '87+ OE-Style COMP Hydraulic Roller Cam.
    Camshaft Series: Xtreme Marine
    Usage: Marine
    Cam Type: Hydraulic Roller
    Grind Number: XM276HR
    Basic Operating RPM Range: 1,800-5,800
    Intake Duration at .050 Inch Lift: 224
    Exhaust Duration at .050 inch Lift: 230
    Advertised Intake Duration: 276
    Advertised Exhaust Duration: 282
    Lobe Separation: 112
    Intake Valve Lift: 0.503
    Exhaust Valve Lift: 0.51
    Lifters Included: No
    Valve Springs Required: Yes
    Assembly Lubricant Included: No
    Camshaft Gear Attachment: 3-Bolt
    Camshaft Material: Austempered Ductile Iron
    Engine Family: Chevrolet 262-400 c.i. 8 Cylinder (1958-1998)
    Cam and Lifter Kit Upgrade: CL12-418-8
    K-Kit Upgrade: K12-418-8
    Lifter Type: Hydraulic Roller
    SK-Kit Upgrade: SK12-418-8
    Amazon ASIN: B000P5B770
    C.A.R.B. Exempt for Racing and Off-Road Only Vehicles?: Yes, but must be a race/competition only vehicle.
    C.A.R.B. Exempt for Federally Certified Vehicles Manufactured Before 1967?: Yes, but must meet tailpipe emission standards for year of vehicle.
    C.A.R.B. Exempt for California Certified Vehicles Manufactured Before 1965?: Yes, but must meet tailpipe emission standards for year of vehicle.
    C.A.R.B. Exempt for Foreign Vehicles Manufactured Before 1967?: Yes, but must meet tailpipe emission standards for year of vehicle.
    C.A.R.B. Exempt for On-Road Vehicles?: No
    C.A.R.B. Exemption Reason: N/A
    C.A.R.B. E.O. Number: N/A
    Grind Number: XM276HR
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