Chevy SBC 350 1.50 7/16" Self Aligning Stainless Steel Roller Rocker Arm Set Speedmaster valve locks are designed

Speedmaster valve locks are designed for stock or performance engines using 7 degree valve locks

while the extruded body has a tensile strength over 60

designed to be used with aftermarket intakes only

They provide higher power and torque transmission

They feature extra-thick steel that's double-welded to the ring gear for added strength

Chevy SBC 350 1.50 7/16" Self Aligning Stainless Steel Roller Rocker Arm Set Speedmaster valve locks are designedSpeedmaster 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.