Chevy BBC 454 1.70 Ratio Aluminum Shaft Mount Roller Rocker Set Stock Offset black or silver anodizing with

black or silver anodizing with the impeccable finish you've come to expect from all Speedmaster components

The air flowing under the plenum provides a cooler charge for the incoming air with less heat transfer from the engine

Speedmaster K1045 steel enclosed elastic dampers are tested to 12

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

or turbocharged

Chevy BBC 454 1.70 Ratio Aluminum Shaft Mount Roller Rocker Set Stock Offset black or silver anodizing withSpeedmaster extruded aluminum and stainless steel shaft mount rocker system includes steel shafts with pedestals. All rockers feature large needle bearings and roller tips. For extreme high performance applications. They not only unleash horsepower, but they also lengthen valvetrain component life and reduce wear and tear on valve stem tips. These rockers are precision machined to ensure consistency and ratio accuracy and have a great looking finish.