7/16" Base to 5/16 Rocker Arm Screw In Stud Kit Choose long or short styles

Choose long or short styles in a natural or shiny polished finish

It is set up to accept a spread bore carb but comes with an adapter plate that permits the use of square bore carbs

Designed to last in street and racing applications

almost everything within the axles is completely interchangeable

Speedmaster offers all the accessories you will need to find the proper configuration for your supercharger combination

7/16" Base to 5/16 Rocker Arm Screw In Stud Kit Choose long or short stylesSpeedmaster 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.