COMP Cams Camshaft Crh 295T H-107 T Thu

When you're looking to give your muscle car or street rod that unmistakable, hard-hitting exhaust note at idle, the COMP Cams Big Mutha' Thumpr camshaft is a popular choice. This camshaft is designed to create a rough, race-car-like idle thanks to its early intake valve opening and long exhaust duration, which creates significant valve overlap. Beyond the sound, it's built to deliver noticeable horsepower gains and a broad torque curve, making it a solid option for street/strip applications.

This particular camshaft, the 243/257 HFT426, is specifically for Chrysler 426 HEMI engines. It requires a few supporting modifications to work correctly. You'll need at least 9.5:1 compression, an aftermarket torque converter with a 2800+ stall speed, and you should plan on using headers and lower gear ratios to keep the engine in its powerband. Because it creates reduced vacuum at idle, you'll also need a vacuum canister, pump, or hydroboost system if your vehicle uses power brakes.

This camshaft fits a range of classic Mopar vehicles, including models like the Dodge Challenger, Dodge Charger, and Plymouth Cuda from the late 60s and early 70s. It's a well-built component for those seeking a more aggressive engine profile and performance.