COMP Cams Camshaft CB XM 308HR-12 - 11-461-8

Xtreme Marine 254/260 Hydraulic Roller Cam for Chevrolet Big Block 396-454

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

Good in jet boat with B impeller with 10:1+ compression, running river drags or bracket racing.

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="{{store url}}Tech-support">contact us</a>, and we will assist you with placing an order. 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.

• 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.
• Intended for applications where low idle speeds are required.