COMP Cams Camshaft CB Nx273HR-13 - 11-409-8

Nitrous HP 224/236 Hydraulic Roller Cam for Chevrolet Big Block 396-454

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

Street machines with 125+ hp nitrous kit, 2200+ stall and lower gears.

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.

• Better time slips for nitrous passes at the strip.
• Wider lobe separation and added exhaust duration from base XE series help shift the power to higher RPM to allow use in nitrous applications.
• Early exhaust opening helps scavenge the extra spent gasses from nitrous or forced induction.
• Wider lobe separation and added exhaust duration from base XE series help shift the power to higher RPM to allow use in nitrous applications.
• Better time slips for nitrous passes at the strip.
• Early exhaust opening helps scavenge the extra spent gasses from nitrous or forced induction.