Crower 74111F Features:

Crower 74111F shaft-mounted stainless steel rocker arms for GM, TFS, Torquer, Performer, Sportsman, and Canfield cylinder heads with 5/8 shaft Designed for SBC iron and Bowtie, Dart II Sportsman, and other compatible GM castings built to cylinder head manufacturer specifications Stainless steel construction delivers high-temperature strength, extreme rigidity, and accurate valvetrain motion for demanding racing applications Engineered for easy installation and maintenance, with optimized moment of inertia for reliable valve control in endurance and high-RPM use

Shaft Rockers Gm,tfs,torq Stainless Steel, 5/8 Shaft, Shaft-mount Design Features:

• Stainless steel shaft-mounted rockers for GM, TFS, Torquer, Performer, Sportsman, and Canfield heads with 5/8 shaft
• Extreme rigidity and precise valvetrain geometry for sustained high-rpm operation and accurate lift control in demanding use
• High-temperature strength and longer service life than aluminum rocker designs in endurance racing and marine applications
• Engineered to head-specific lift requirements for easier installation, simplified maintenance, and dependable shaft-system fitment
• Optional needle-bearing roller tip upgrade reduces friction, improves valve control, supports higher RPM, and lowers guide wear