Jesel Pro Series Aluminum Shaft Mount Roller Rocker Arm Kit - 1.7 / 1.7 Ratio - Full Roller - Edelbrock RPM XT / Dart 24 Degree Pro 1 Heads - Big Block Chevy (Set of 16) MPI-QR-R1-56-BT The combination of the larger

The combination of the larger gap and longer duration spark provides the most complete combustion of the fuel mixture possible for increased horsepower and torque

10‚Å ∞ or 20‚Å ∞ increments for quick

stylish trim

hex head for barring engine

Jesel Pro Series Aluminum Shaft Mount Roller Rocker Arm Kit - 1.7 / 1.7 Ratio - Full Roller - Edelbrock RPM XT / Dart 24 Degree Pro 1 Heads - Big Block Chevy (Set of 16) MPI-QR-R1-56-BT The combination of the largerProduct Description: Rocker Arm Pro Series Shaft Mount 1. 7 1. 7 Ratio Full Roller Aluminum Natural Edelbrock RPM XT Dart 24 Degree Pro 1 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