Jesel Sportsman Shaft Mount Roller Rocker Arm - 1.50 Ratio - AFR Eliminator Heads - Small Block Chevy (Set of 16) 4087ADURD Sprint Style

Sprint Style

14 mm Flat Seat

Callies Performance Products began manufacturing high performance crankshafts in 1989

Manifold height: A-5

Jesel Sportsman Shaft Mount Roller Rocker Arm - 1.50 Ratio - AFR Eliminator Heads - Small Block Chevy (Set of 16) 4087ADURD Sprint StyleProduct Description: Rocker Arm Sportsman Shaft Mount 1. 50 Ratio Full Roller Aluminum Natural AFR Eliminator 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