Crower 74178F Features:

Crower 74178F BMF 18° SBC shaft mount rockers for 5/8 shaft applications Stainless steel rocker construction delivers extreme rigidity, accuracy, and heat resistance Arm length 1.650 with .500 intake offset and .250 exhaust offset for BMF 18° setups Uses stand ID #012F, stand part #74400X012F, for simplified installation and maintenance

Shaft Rockers Bmf 18 Degr 5/8 Shaft SBC 18° Features:

• Stainless steel shaft-mount rockers for SBC 18° heads with 5/8 in. shafts, built for extreme rigidity and valvetrain accuracy
• 1.650 arm length with .500 intake offset and .250 exhaust offset for precise geometry in BMF 18° small-block Chevy setups
• Needle-bearing roller tip option reduces friction, helps free horsepower, and lowers valve guide and valve stem wear under load
• High-temperature-resistant construction outlasts comparable aluminum rockers in dirt late model and marine endurance racing applications
• Compatible with stand ID #012F and stand part #74400X012F for simplified installation and easier trackside maintenance