Crower 74176F Features:

Crower 74176F shaft-mounted rocker system for SBC with Edelbrock 61219 cylinder heads, 5/16 in. valves, and 5/8 in. shafts. CNC precision-machined from ball race alloy steel, double heat-treated, and micro-finish ground for consistent geometry and strength. Features a 1.480 in. arm length with 0.300 in. intake offset and 0.200 in. exhaust offset for the specified head configuration. Fully rollerized precision needle-bearing fulcrums and hi-temp alloy lash adjusters help reduce friction and support valvetrain stability.

Shaft Rockers SBC Edelbro 5/16 In. Valves, 5/8 In. Features:

• Shaft-mounted rocker system for SBC Edelbrock 61219 heads with 5/16 in. valves and 5/8 in. shafts for precise valvetrain geometry
• CNC precision-machined ball-race alloy steel arms, double heat-treated and micro-finish ground for strength and wear resistance
• 1.480 in. arm length with 0.300 in. intake offset and 0.200 in. exhaust offset for optimized head-specific rocker alignment
• Fully rollerized precision needle-bearing fulcrums for reduced friction, smoother valvetrain motion, and consistent high-rpm operation
• Hi-temp alloy lash adjusters and roller-tip design help minimize valve guide wear while improving stability and adjustment durability