Bbc Cam 308Ar (Solid Roller)

The Bbc Cam 308Ar (Solid Roller) from COMP CAMS is a high-performance mechanical roller camshaft engineered for serious big block Chevy builders who demand consistent valve control across a broad RPM band. This solid roller design eliminates rocker arm deflection, delivering precise valve timing and reliable operation in street and strip applications. Whether you're building a classic muscle car engine or upgrading an existing big block platform, this camshaft provides the foundation for repeatable power delivery and component longevity.

Featuring a 0.652-inch lift on both intake and exhaust valves with a 308-degree duration specification and a 110-degree lobe separation angle (LSA), the Bbc Cam 308Ar balances efficiency and responsiveness across its 3000–7200 RPM operational window. The solid roller design—as opposed to hydraulic or flat-tappet alternatives—minimizes valvetrain flex and wear, ensuring tighter tolerances and more accurate cam profile execution. The mechanical roller bearing arrangement directly contacts the lobe, reducing friction and allowing higher sustained RPM operation without sacrificing durability. COMP CAMS' precision grinding and quality control ensure each unit meets strict OEM standards for bore concentricity and lobe accuracy.

This camshaft is ideal for enthusiasts building or refreshing big block Chevy engines—including 454 and 502 platforms—that require aggressive valve events without extreme duration or radical overlap characteristics. Installation requires a solid roller compatible valvetrain including pushrods, rocker arms, and lifters rated for mechanical roller operation; confirm your complete package before ordering. The moderate 308-degree duration and 110 LSA make this an excellent choice for street-driven engines seeking improved breathing while maintaining streetable idle quality and drivability. Weighing 10.39 lbs and dimensioned at 3.05 × 2.75 × 24.55 inches, the Bbc Cam 308Ar is ready for immediate drop-in installation into prepared big block Chevy short blocks.