Crower 74190F Features:

Crower 74190F shaft-mounted stainless steel rocker system for Mast LS3 12° large bore applications. Includes 5/8 in. shafts for increased valvetrain rigidity and accurate rocker motion control. Steel-based valvetrain design is optimized for rigidity, accuracy, and reduced moment of inertia. Engineered for easier installation and maintenance in high-performance LS 12° cylinder head setups.

Shaft Rockers Mast Ls 12 Stainless Steel 5/8 Shafts Features:

• Stainless steel shaft-mounted rocker system for MAST LS3 12° large-bore applications with 5/8 in. shafts
• Extreme rigidity and valvetrain accuracy for high-rpm performance with stable geometry and consistent motion under load
• Optimized moment of inertia for responsive valvetrain action and dependable high-temperature operation in endurance use
• Easy-install design with simplified maintenance for racing and endurance engine service requirements and reduced downtime
• Longer-life alternative to aluminum rockers in dirt late model and marine endurance applications under sustained heat