5/16" Base to 7/16" Rocker Stud Set These Speedmaster aluminum water pump

These Speedmaster aluminum water pump pulleys are made from a 356 aluminum alloy that is heat-treated to T-6 specs

This body has a much larger diameter then your existing throttle body

filter element

28 Spline Oversize Pinion Bearings:PCE207

which is much stronger than stock steel and mates better with an aluminum case

5/16" Base to 7/16" Rocker Stud Set These Speedmaster aluminum water pumpSpeedmaster arm stud kits are made of 4140 Chromoly steel. They're roll threaded, heat treated to a maximum strength of 190,000+ PSI. and have a black oxide corrosion resistant finish. They feature larger radius stud fillets for extra strength.