Crower 74140F Features:

Crower 74140F shaft rocker system for small-block Ford with AFR 165-225 heads, +0.100 valve length, and +0.700 lift compatibility. Stainless steel rockers deliver high-rpm stability, longer service life than aluminum, and strong resistance to sustained high temperatures. Includes 5/8 in. shaft, 1.450 in. arm length, 0.100 in. intake offset, 0.000 in. exhaust offset, and 031F stand ID. Shafts are CNC precision-machined from ball-race alloy steel, double heat-treated, and micro-finish ground for rigidity and accuracy.

Shaft Rockers Sb Ford Afr +.700 Lift 5/8 Shaft Features:

• Stainless steel rocker system for SB Ford AFR heads, +.700 lift, +.100 valve, 5/8 in. shaft for high-rpm stability and precise geometry
• CNC-machined ball race alloy steel shafts, double heat-treated and micro-finish ground for rigidity, reduced friction, and longer valvetrain life
• 1.450 in. arm length with 0.100 in. intake offset and 0.000 in. exhaust offset for accurate alignment and consistent valve motion
• Shaft-mounted design helps increase horsepower while minimizing valve guide and valve stem wear in demanding racing and endurance use
• Engineered for dirt late model and marine endurance applications where reliable high-temperature performance and easy service matter most