Crower 74104F Features:

Crower 74104F stainless-steel shaft-mount rockers for DART Pro 1 Platinum 227 SBC heads Designed for +.100 valves with CNC ports and a 5/8 shaft-width configuration Built to the cylinder-head manufacturer's maximum-lift specifications for this application Application-specific geometry may require customization when using longer valves or higher lift

Shaft Rockers Dart Pro 1 SBC Pro 1 227, Features:

• Stainless steel shaft-mount rockers for DART PRO 1 Platinum 227 SBC with +.100 valves and CNC ports, application-specific fitment
• Built to cylinder head manufacturer maximum-lift specifications for stable valvetrain motion and consistent high-RPM operation in performance SBC builds
• 5/8 shaft-width design helps provide rigid rocker support, reduced flex, and accurate valve actuation under increased spring loads
• Engineered for correct geometry on specified head and valve combination; modified applications may require customization to maintain proper alignment
• Crower 74104F shaft rocker system for SBC Pro 1 227 setups, ideal for +.100 valve and CNC-ported cylinder head configurations