Custom-Ground Solid Roller Tappet Camshaft

The COMP Cams Custom Ground Camshaft Core 12-000-9 is engineered for demanding engine builds that require precise valvetrain control and significant performance gains. This camshaft features a solid roller tappet design, optimized for high-RPM operation between 4000 and 8000 RPM. Key specifications include an intake duration of 263 degrees and an exhaust duration of 269 degrees at 0.050 inch lift. The lobe separation is set at 101 degrees, contributing to its aggressive power band. Valve lift measures 0.652" on the intake and 0.655" on the exhaust with a 1.5 ratio rocker, and can reach 0.695" intake and 0.700" exhaust with a 1.6 ratio rocker. The specific grind number for this core is CS 319R-1/324R-4 R107 J. It is typically utilized in performance-oriented engine families, such as Chevrolet Small Block engines ranging from 262 to 400 cubic inches, with many applications from 1958-1998.