Chevy SBC 350 1.6 Ratio 7/16" Stainless Steel Roller Rocker Arms Set Speedmaster machined aluminum water pump

Speedmaster machined aluminum water pump pulley nose cones are constructed from top-quality 356 aluminum alloy that's heat-treated to T6 specifications

They start to make awesome power around 3

and hardware

heat-treated to a maximum strength of 190

100635 Spline Oversize Pinion Bearings:PCE207

Chevy SBC 350 1.6 Ratio 7/16" Stainless Steel Roller Rocker Arms Set Speedmaster machined aluminum water pumpSpeedmaster 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.