Out of stock
SKU: COM12-940-9
UPC: 036584671978
MPN: 12-940-9
The COMP CAMS SBC Solid Roller Cam 290A-R6 is a mechanical roller camshaft engineered specifically for small-block Chevy oval-track racing applications. This solid-roller cam delivers 0.645-inch intake lift and 0.630-inch exhaust lift with a 290-degree intake duration and 300-degree exhaust duration, operating effectively across a 3000 to 7000 RPM band. The 106-degree lobe separation angle (LSA) is optimized for the aggressive power characteristics required in competitive oval-track environments where consistent, repeatable valve timing and maximum scavenging efficiency directly impact lap times and engine reliability.
The mechanical roller design minimizes friction losses and enables faster valve events compared to flat-tappet alternatives, critical advantages in high-RPM competition where every millisecond of valve overlap matters. Solid-roller construction—as opposed to hydraulic—provides zero lash variability, ensuring absolute precision in valve control lap after lap without the complexity of hydraulic adjustment. The specified lift values and duration figures work in concert with the LSA to create a cam profile that prioritizes mid-to-high RPM power production and efficient cylinder scavenging, standard requirements for oval-track engines operating at sustained high speeds.
This camshaft is purpose-built for dedicated race teams and engine builders preparing small-block Chevy platforms for track competition. The 290A-R6 profile suits competitors who demand predictable, aggressive cam timing with the durability and precision of solid-roller mechanics. Installation requires a compatible small-block Chevy block, proper pushrod geometry verification, and attention to valve-to-piston clearance—essential checks before any high-performance cam installation. Oval-track racers selecting this cam should confirm compatibility with their existing valvetrain components and verify that their engine management or carburetors are tuned to the new cam's breathing characteristics for optimal results.
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