Jesel Pro Series Aluminum Shaft Mount Roller Rocker Arm Kit - 1.7 / 1.7 Ratio - Full Roller - Brodix BB-1 / BB-2 Heads - Big Block Chevy (Set of 16) Vacuum Hose With the increase of vacuum

With the increase of vacuum rule

it is recommended for any race or street performance application where GL-4 gear oil is required

332 lb/in Spring Rate

Organic / Carbon Composite

Jesel Pro Series Aluminum Shaft Mount Roller Rocker Arm Kit - 1.7 / 1.7 Ratio - Full Roller - Brodix BB-1 / BB-2 Heads - Big Block Chevy (Set of 16) Vacuum Hose With the increase of vacuumProduct Description: Rocker Arm Pro Series Shaft Mount 1. 7 1. 7 Ratio Full Roller Aluminum Natural Brodix BB 1 BB 2 Heads Big Block Chevy Set of 16 Dan Jesel realized early on that the success and demand for his high end valvetrain components was in part dependent on huge valve lifts, unheard of spring pressures and rpm that most thought was impossible. So he started on a 10 year quest to perfect the roller lifter. After nearly nine years of R&D and