Crower 74103F Features:

Crower 74103F stainless steel shaft-mounted rocker system for SBC Dart Pro 1 227, 23° + .250 valve applications Uses heavy-duty 5/8 in. shafts for rigid, accurate valvetrain control in high-RPM racing and endurance builds Machined for maximum-lift configurations with 1.480 intake length, .300 and .200 offsets, and base stand 74400x052F Stainless steel construction resists sustained high temperatures and offers longer service life than aluminum rockers

Shaft Rockers Dart Pro 1 SBC 5/8 In. Shafts Features:

• Stainless steel shaft-mounted rocker system for SBC Dart Pro 1 227, 23° + .250 valve applications, 5/8 in. shafts
• Extreme rigidity and accurate valvetrain geometry for high-rpm racing, dirt late model, and marine endurance use
• Heavy-duty 5/8 in. shaft design helps reduce flex under load for stable valve motion and consistent performance
• Machined for maximum-lift configurations with 1.480 intake length, .300 and .200 offsets, base stand 74400x052F
• High-temperature-resistant construction for longer service life than aluminum rockers, with optional needle-bearing roller tips