COMP Cams Camshaft CRS 283T HR-107 T Th

If you're looking to give your classic Mopar a serious attitude adjustment, the COMP Cams Thumpr camshaft is a popular choice for street rods and muscle cars. This camshaft is designed to create that unmistakable, aggressive idle that sounds like it's ready to hit the track, while also boosting horsepower and broadening the torque curve. It achieves this by opening the intake valve early and using a long exhaust duration, which creates significant valve overlap for that signature choppy idle.

This particular camshaft, the CRS 283T HR-107, is a hydraulic roller camshaft specifically for Chrysler's LA series engines like the 273, 318, 340, and 360. While it offers a noticeable performance upgrade, it's important to know that this aggressive profile typically results in reduced vacuum at idle. This means you'll likely need to add a vacuum canister, pump, or hydroboost system if your vehicle relies on vacuum for power brakes. For optimal performance and to keep the engine in its powerband, it's recommended to pair this camshaft with an aftermarket torque converter spinning at 2000 RPM or higher, along with lower gear ratios.

This camshaft fits a wide range of Chrysler, Dodge, and Plymouth vehicles from the 1960s through the 1990s, including popular models like the Dodge Challenger, Plymouth Barracuda, and Chrysler Cordoba. It's a well-built component that can significantly change the character of your engine. Remember to consult the manufacturer's installation instructions for specific details on setup and any additional components you might need.