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Experience unparalleled performance and power with Speedmasters 6-71 Complete Supercharger Kitengineered for maximum horsepower and durability
but with several important modifications
Crafted from durable materials
They're designed with performance in mind
Use existing bolt holes to mount these brackets with the included hardware
Ford SB 289 302 351 Windsor 1.6 7/16" Stainless Steel Roller Rocker Arm Set Experience unparalleled performance and powerSpeedmaster 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.
