COMP Cams® FSL ™ Series Camshaft Expansion for GM LS Engines


COMP Cams® recently introduced the first performance aftermarket camshaft in almost 20 years to pass the stringent California Air Resources Board (CARB) Executive Order (E.O.) process for a domestic engine, and now that product line has been expanded to include even more camshafts.

The CARB E.O.-certified camshafts offer drop-in convenience, with no valve spring change or computer tuning required, for the following GM LS applications:

  • GM Gen III/IV Three-Bolt 1997-2015
  • GM LS2/LS3 Gen IV Single-Bolt w/o VVT or AFM 2007-2015
  • GM LS2/LS3 Gen IV Single-Bolt w/ AFM, w/out VVT & AFM 2005-2014
  • GM Gen IV Single-Bolt w/ VVT (12606358 Phaser) & AFM 2008-2015

FSL ™ Cams for the GM Gen III/IV three-bolt and LS2/LS3 single-bolt applications can produce a 30 to 47 HP increase in peak power, while the versions for Gen IV single-bolt cams work with factory Variable Valve Timing and Active Fuel Management and also provide similar power increases. The best part of these new FSL™ cams is the incredible power gains that come without the risk of non-compliance with emissions regulations.

About COMP Cams®

Founded in 1976 and based in Memphis, TN, COMP Cams® has become the automotive performance aftermarket’s “Absolute Leader in Valve Train Technology.” Our mission is to produce the highest-performing products possible, provide superior customer service and lead the industry in technological development.

Additional information about COMP Cams® and its products can be found at or by calling 1.800.999.0853 open M-F 7am-8pm CST. You can also visit us on Facebook (, Twitter (, Instagram ( and YouTube (


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