The Ford 4.6L Modular 3V Ford Mustang engine has become increasingly popular, so now the question is - how can we further improve the performance of it?

COMP Cams has built upon Ford�s technology with Four series of camshafts created specifically for these engines:

• THUMPR NSR Series: (No Springs)



• NSR Series: (No Springs Required)



• VSR Series: (Valve Springs Required)



• SPR Series: (Springs / Phasers Required)

Ford built a great car in the 2005-2010 S197 Mustang, but with a little help from COMP Cams it can sound and perform like a real "hot rod".

COMP Cams Thumpr Ford 3 Valve Cam Sets for 4.6L Modular 3 Valve Engines deliver an aggressive "thumping" exhaust idle and generous power gains in the middle & upper rpm range. These cams will turn your naturally aspirated or blower-equipped Ford 3 valve engine into a performance machine with a minimum of installation difficulty; only requiring the addition of the COMP Cams Cam Phaser Limiter Kit (#5449) and computer tuning. The COMP Cams Cam Phaser Limiter Kit (#5449) safely modifies the factory variable cam timing (VCT) system allowing for the use of aggressive camshaft lobe technology without sacrificing the benefits of the VCT. Extensive testing of these new camshaft combinations has confirmed repeatable power gains of 25+ rear wheel horsepower with no sacrifices in long term durability.