Jesel External Camshaft Belt Drive - Marine - Big Block Chevy H777C04 5 PSI maximum

5 PSI maximum

Sierra 3500 HD 2017-2011

Install a set of BBK performance underdrive pulleys and see an average of 8-15 additional horsepower over the stock pulleys

For EFI applications use regulator P/N 13134 or P/N 13305

2003-2007 Blue Bird Commercial Bus

Jesel External Camshaft Belt Drive - Marine - Big Block Chevy H777C04 5 PSI maximumProduct Description: Camshaft Belt Drive External Billet Aluminum Marine Big Block Chevy 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 endless testing, Dan brought the first Jesel roller lifters