Crower 74128F Features:

Crower 74128F stainless steel shaft rockers for Victor 18°, GM 18°, and Dart 18° cylinder heads. Features 1.480 in. arm length with 5/8 in. shaft, .550 intake offset, and .250 exhaust offset. Shaft-mount design for SBC 15°, 16°, 18° clone, and Victor 18° applications with up to 1.7 intake ratio. Engineered for extreme rigidity, accuracy, and optimized moment of inertia in race-track conditions.

Shaft Rockers Victor 18 D Stainless Steel, 1.480 In. Features:

• Stainless steel shaft-mount rockers for SBC 15°, 16°, 18° clone and Victor 18° heads, built for extreme rigidity and valvetrain accuracy
• 1.480 in. arm length with 5/8 in. shaft, optimized for Victor 18° , GM 18° and Dart 18° cylinder head geometry and stable high-RPM operation
• Up to 1.7 intake rocker ratio with .550 intake offset and .250 exhaust offset, supporting precise alignment and efficient valve motion under race use
• Low-maintenance shaft system with strength retention at sustained high temperatures, delivering longer service life than aluminum rockers in endurance applications
• Ideal for dirt late model and marine endurance racing, with optimized moment of inertia for responsive valvetrain control and consistent track-side performance