Crower 74218F Features:

Crower 74218F shaft-mounted rocker system for Chevrolet and GM V6 engines with 18° LA cylinder heads Stainless steel construction with CNC-machined ball race alloy steel components, double heat-treated and micro-finish ground Features 1.650 in. arm length, split .550 intake and .650 exhaust ratios, and .250 offset for valvetrain geometry Fully rollerized precision needle bearing fulcrums, hardened tip wheels, and aircraft-quality 12-point nuts

Shaft Rockers Chevy V6 18 Stainless Steel, Shaft-mounted, 18° Features:

• 18° LA Chevy/GM V6-specific shaft-mounted rocker system for precise valvetrain geometry and stable high-rpm valve control
• 1.650 in. arm length with .550/.650 split ratios and .250 offset to maximize net valve lift in matched 18° head applications
• CNC-machined ball race alloy steel rockers, double heat-treated and micro-finish ground for high-strength racing durability
• Fully rollerized precision needle bearing fulcrums and hardened tip wheels reduce friction, scrubbing, and valve guide wear
• Aircraft-quality 12-point nuts with optional needle bearing roller tip compatibility for reduced spring stress and freer horsepower