Chevy 350 Complete 4 Bolt Splayed Steel Main Caps (5 Caps) The Speedmaster design incorporates open-fin

The Speedmaster design incorporates open-fin spacing that promotes airflow through the radiator to enhance the cooling and help eliminate clogging

Speedmaster oil pump pickups are engineered for maximum flow and long-term durability

Bronze gears absorb the increased wear in special cams and magnetos and are easily replaced before costly damage to the camshaft gear occurs

Speedmaster machined aluminum water pump pulley nose cones are offered straight off of the mill without polishing for a gorgeous matte finish

Speedmaster valve seals are posi-stop seals made from high-temperature Viton¨ material for a long-lasting seal

Chevy 350 Complete 4 Bolt Splayed Steel Main Caps (5 Caps) The Speedmaster design incorporates open-finSpeedmaster main caps are precision machined from superior quality steel. They come available as stock replacements (straight bolt) or with splayed outer bolt holes. These extreme main cap sets consist of all 5 caps including the rear and front cap. Speedmaster main caps improve reliability in highly stressed engines by reducing distortion of the main bearing bores, and increasing the cap's resistance to closing up under high loads.