Pontiac 265 350 400 455 1.52 Ratio 7/16" Aluminum Roller Rocker Arms and other horizontal surfaces

and other horizontal surfaces

Speedmaster has chosen the most popular diameters for their pulleys

The oil pan serves as the reservoir for the engine's oil

Flows 1150 cfm

They feature aluminum construction and provide double rate cooling due to the double pass design

Pontiac 265 350 400 455 1.52 Ratio 7/16" Aluminum Roller Rocker Arms and other horizontal surfacesSpeedmaster Stainless steel rollers are manufactured from heat treated stainless steel and alloy steel tip rollers. Speedmaster roller rockers are available in various ratios, so you are good to go. They feature greater strength and durability, capable of withstanding valve spring load up to 600lbs.