Jesel Pro Series Aluminum Shaft Mount Roller Rocker Arm Kit - 1.6 / 1.6 Ratio - Full Roller - Dart 23 Degree Heads - Small Block Chevy (Set of 16) HLY300-719BK When vacuum drops below 15

When vacuum drops below 15 in

set a two step rev limit

Delta Rings

1988-1988 Chevrolet R30

Jesel Pro Series Aluminum Shaft Mount Roller Rocker Arm Kit - 1.6 / 1.6 Ratio - Full Roller - Dart 23 Degree Heads - Small Block Chevy (Set of 16) HLY300-719BK When vacuum drops below 15Product Description: Rocker Arm Pro Series Shaft Mount 1. 6 1. 6 Ratio Full Roller Aluminum Natural Dart 23 Degree Heads Small 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