COMP Cams Cam & Lifter Kit FC 299Th R7

If you're looking to build a serious street/strip machine with a Ford 351 Cleveland, 351 Modified, or 400 Modified engine, this COMP Cams Big Mutha' Thumpr camshaft and lifter kit is designed to make a statement. This kit is built for those who want a very noticeable, rough idle and a cam profile that really wakes up the top end of their engine. It's a popular choice for Ford V8s in a wide range of vehicles, from classic Mustangs and Torinos to F-Series trucks and Broncos, giving them a much more aggressive personality.

This is a hydraulic roller camshaft and lifter kit, which means it's designed for improved valvetrain efficiency and durability compared to flat tappet setups. The 'Big Mutha' Thumpr' designation hints at its aggressive nature, with a 243/257 degree intake/exhaust duration. To get the most out of this cam, you'll need to ensure your engine has at least 9.5:1 compression, a 2800+ RPM stall speed torque converter if you have an automatic transmission, and supporting modifications like a performance intake, rear gears, and headers. The rough idle is a signature characteristic, so be prepared for that distinctive sound.

When you order this kit, you'll receive everything you need to get started: the camshaft itself, a set of lifters, assembly lube to ensure proper break-in, and decals. It's a comprehensive package for a significant engine upgrade. Remember that this cam is intended for off-road use and is not CARB approved, so it cannot be shipped to California. Make sure your engine is ready for this level of performance before installation.