5/16" Base To 7/16" Rocker Stud Set +0.500 Longer Late Ford Head Applications Silicon aluminum is the choice

Silicon aluminum is the choice for many of today's engine manufacturers because of its high fatigue strength and superior temperature threshold

They also help to insulate the carburetor from engine heat and provide clearance for linkages

Speedmaster now offers heavy duty race shifter cables to suit the popular B&M and Hurst transmissions

This upgraded combination elevates the standard in electronic fuel injection

Speedmaster serpentine belts are designed to keep your accessory drive operating properly

5/16" Base To 7/16" Rocker Stud Set +0.500 Longer Late Ford Head Applications Silicon aluminum is the choiceSpeedmaster 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.