Crower 74720F Features:

Fits BBC RHS 376/380 CNC and Pro Topline heads; RH shaft rocker system with 1.650 in. arm length and .000 in. intake/exhaust offsets. 5/8 in. one-piece intake stands tie the system together like a girdle, adding head strength with no custom machine work required. 17-4PH stainless steel rocker bodies and 1025 heat-treated construction resist high heat better than aluminum in sustained high-RPM use. CNC-machined 5/8 in. ball race alloy steel shafts are double heat-treated and micro-finish ground for valvetrain stability under heavy spring loads.

Shaft Rockers Bb Chevy Rh Rhs 376 Cnc 5/8 Features:

• 17-4PH stainless steel rocker bodies, 1025 heat-treated construction, hardened tip wheels, high-rpm valvetrain stability
• 5/8 in. one-piece intake stands, shaft-girdle design, zero machine work installation, reduced rocker flex under spring load
• Fully rollerized needle bearing fulcrums, sure-lock adjusters, 12-point nuts, accurate valve timing, lower maintenance
• 1.650 in. arm length, .000 in. intake and exhaust offsets, minimized tip travel, reduced side-loading, less valve guide wear
• Fits BBC RHS 376/380 CNC and Pro Topline heads, precision-ground double heat-treated shafts, race-ready durability