Thumprâ„¢ Camshafts for Big Block Chevrolet Engines

New BBC retro-fit hydraulic roller cams provide unmatched musclecar sound & power

Memphis, TN, May 24, 2007 --( When the Big Block Chevrolet engine debuted in 1965, it revolutionized the high performance world. The new COMP Cams® Thumpr™ Camshafts take the original Mark IV engine one step further with a line of three retro-fit hydraulic roller camshafts that not only delivers excellent power and torque gains, but includes another important feature – true high performance camshaft sound. For those folks who desire not only the performance but the sound of power, COMP Cams® Thumpr™ Camshafts are the perfect component for the job.

These street compatible camshafts fit 1965 through 1995 Big Block Chevrolet 396-454cid engines that originally came equipped with flat tappet lifters (to fit 1965 and early 66 model years, special modification of the rear journal is required – available through COMP Cams®). Thumpr™ Camshafts offer the choice of three different horsepower levels to meet most engine building requirements. By “tightening” the lobe separation angle of the camshaft, the COMP Cams® engineering team has delivered the “holy grail” for performance enthusiasts – unbelievable sound quality and real horsepower gains. Best of all, the Thumpr™ camshafts deliver all these benefits without sacrificing drivability.

For more information about the new line of COMP Cams® Thumpr™ Camshafts or any other COMP Cams® products, call us at 1-800-999-0853, or visit online at

Tammy Holland