COMP Cams Camshaft CB XR280 R-10

If you're building a street machine that needs more grunt, this COMP Cams Xtreme Energy XR280 solid roller camshaft is a solid option for your Chevrolet Big Block engine. This camshaft is designed to work with engines like the 396, 427, and 454, and it's optimized for performance builds that include a 2800+ RPM stall torque converter, 10:1 or higher compression ratio, and 3.73 to 3.90 rear axle gears. It's a popular choice for those looking to get more out of their street-focused performance vehicle.

The XR280 features a 242-degree intake duration and a 248-degree exhaust duration at .050 inch lift, with a .572 inch intake lift and .590 inch exhaust lift. This camshaft is a solid roller design, which means it uses roller lifters for reduced friction and increased performance potential compared to flat tappet designs. It's important to note that this camshaft requires a Melanized or Nitrided distributor gear to prevent premature wear and potential warranty issues; cast iron or steel gears without these surface treatments are not compatible.

This camshaft fits a wide range of Chevrolet Big Block applications, including popular models like the Chevrolet Impala, Chevelle, and Camaro from the late 1960s through the mid-1970s, as well as C10 pickups and Corvettes from the same era. When installing this camshaft, be sure to consult the manufacturer's instructions regarding the proper distributor gear and any other specific requirements to ensure optimal performance and longevity.