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COMP Cams Part # CCA11-240-4

COMP Cams Camshaft CB XM 278H-12 - 11-240-4

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Trusted since 2005 Questions? Email sales@raptorracing.com

Xtreme Marine 234/244 Hydraulic Flat Cam for Chevrolet Big Block 396-454

Application: Chevrolet GEN IV 396-454 Big Block Engines Originally Equipped with Flat Tappet Camshafts

Jet w/ A impeller, needs improved intake, likes headers.

BBC - 1965-66 396 c.i.d. models have an oiling groove in the rear journal. The listed part numbered cams will not fit these models, so if you require a Camshaft with the oiling groove, please call us at 1-800-999-0853 or <a href="https://www.raptorracing.ca/Tech-support">contact us</a>, and we will assist you with placing an order.

  • Extremely wide powerband helps get boats on plane while making maximum horsepower.
  • Power enhancement helps maintain top-end speed for longer distances.
  • Intended for applications where low idle speeds are required.

  • Advertised Exhaust Duration: 292°
  • Camshaft Gear Attachment: 3-Bolt
  • Camshaft Material: Cast Iron
  • Engine Family: Chevrolet 396-454 c.i. 8 Cylinder (1967-1996)
  • Lifter Type: Hydraulic Flat Tappet
  • Grind Number: XM278H
  • Valve Springs Required: Yes
  • Advertised Intake Duration: 278°
  • Exhaust Duration at .050 inch Lift: 237°
  • Basic Operating RPM Range: 2,000-6,200 RPM
  • Lobe Separation: 112°
  • Exhaust Valve Lift: 0.566 in.
  • Intake Valve Lift: 0.564 in.
  • Assembly Lubricant Included: Yes

Free U.S. standard shipping on qualifying orders $199+. Special order and made-to-order items can't be cancelled or refunded once ordered.

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