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)

SPR Series (SPRING & PHASER MODS REQUIRED) FORD 4.6L MODULAR 3V CAMS

XFI SPR (Springs and Phaser Mods Required) Camshafts Valve Engines. Designed to achieve the most horsepower and torque increases possible with the popular Ford 4.6L Modular 3 Valve engines. This last group of cam sets is available for both naturally aspirated and supercharged engines, and each version is offered in three performance levels. Designed to work with a modified Ford variable cam timing (VCT) system, these camshafts are direct replacement components. Working with the required COMP Cams Cam Phaser Limiter Kit (Part #5449; patent pending), these XFI SPR Cams optimize both low and high rpm performance. As noted by the COMP Cams engineering staff during extensive dyno testing, these camshafts provided the biggest power and torque improvements of any cam series they�ve ever tested in the Ford Modular 3 Valve engine. Net power increases up to and as much as 75 +HP increases over stock levels.