Camshafts

Reduced ratio rockers lessen spring pressure and lower lift for proper camshaft break-in

January 2008 -- Proper break-in of high lift flat tappet camshafts in performance engines is often achieved by removal of the inner valve springs during the initial-start up period. This critical procedure can often be a time consuming and difficult process. To ease this process, COMP Cams® introduces Big Block Chevrolet Aluminum Break-In Rocker Arms that feature a reduced 1.5:1 ratio as opposed to the factory 1.7:1 ratio.

COMP Cams Big Block Chevrolet Aluminum Break-In Rocker Arms

With this reduced ratio, the effective camshaft lift and valve spring pressure are reduced for easier camshaft break-in.

Two new camshaft sets, one for increased torque and the other for maximized top end hp, deliver up to 25 rear wheel horsepower without changing valve springs

Jan. 2008 -- Anyone who has faced the challenge of changing valve springs in today’s Ford 4.6L/5.4L Modular 3 Valve engines knows the difficulty involved. Not only does the swap to aftermarket valve springs require the proper tools and mechanical skills, but also additional time and money.

COMP Cams XFI NSR Cam Set

Revolutionary Thumpr™ lobe technology now available for hydraulic flat tappet cams

November 2007 -- Now available for hydraulic flat tappet applications, COMP Cams® new Thumpr™ series of camshafts are the hottest cams to hit the streets in more than a decade. Applying a new camshaft design concept originally created for sports car endurance racing, the COMP Cams® engineering team incorporated early exhaust valve opening, long exhaust duration and a generous amount of intake and exhaust overlap to maximize your engine’s nasty-idling characteristics. Best of all, they won’t negatively impact power output or streetability.