SBC Thumpr Series Hyd. Cam 287TH

The SBC Thumpr Series Hydraulic Cam 287TH from COMP CAMS is a premium performance camshaft engineered for small-block Chevrolet engines seeking aggressive street and mild racing applications. This hydraulic roller cam delivers the signature loping idle and responsive power band that enthusiasts demand when building a high-performance small-block. Whether you're rebuilding a classic muscle car or modernizing a street rod, the 287TH brings proven COMP CAMS engineering to your cylinder head.

Designed with hydraulic roller lifter compatibility, the 287TH cam profile maximizes valve lift and duration to optimize breathing efficiency across the RPM range. The hydraulic design eliminates the need for manual valve lash adjustment, simplifying installation and tuning while maintaining reliable operation under sustained load. COMP CAMS' precision manufacturing ensures consistent cam lobe geometry and surface finish, critical for longevity when pairing with aftermarket valve springs and rocker arms. The broad, aggressive lobe profile encourages fuel mixture scavenging and intake charge velocity, translating to measurable torque gains in the mid-range where street engines operate.

Builders upgrading from stock camshafts will notice immediate throttle response and a distinctive exhaust note that announces the performance investment. Installation requires a compatible hydraulic roller lifter set, updated valve springs rated for the 287TH's lift specifications, and proper cam timing verification using a degree wheel or dial indicator. This cam works best in small-block Chevrolet platforms (265–400 cu. in.) running fuel injection or carburetor setups with a capable induction system; pairing with a dual-plane or single-plane intake manifold and quality exhaust headers maximizes the performance benefit. Verify your engine block, crankshaft, and valvetrain clearances before purchase to ensure safe installation.