Jesel Sportsman Series SS Shaft Mount Rockers - Big Block Chevy

JESEL Sportsman Series rocker kits are designed to bolt on without any cylinder head modifications and in most cases still fit under a stock valve cover. The rocker geometry is preset and engineered using the common valve supplied with the particular cylinder head to provide a bolt-on and go installation.

In the case of many big block Chevy engines, the OEM rocker arm and stud assemblies are inadequate and not up to the job of handling today’s more aggressive valve springs and cam profiles. That’s where JESEL Sportsman Series SS Shaft Mount Rockers are a great solution. These rockers kits are designed to be a bolt-on fit with existing cylinder heads, and in most cases will fit under the OEM valve covers. With a 2024 aluminum body, these rockers are lightweight, but can withstand open spring pressures of up to 900 pounds and still maintain their precise valve lash settings. 

Performance Benefits & Key Features

Full rocker arm sets include the rockers (full roller style), studs, shims and assembly lube (pushrods may need to be replaced in some instances). Rockers, studs and shims are available separately, as are rocker arm adjust kits with 12 point nuts and washers. To make the job go a little easier, check out our JESEL valve spring removal tool for big block Chevy engines. 

Fitment, Compatibility & Applications 

JESEL Sportsman Series SS Shaft Mount Rockers are designed for big block Chevrolet applications with either cast iron or aluminum heads. They’re compatible with Edelbrock RPM, World Products, Race-Rite, Canfield, Edelbrock Victor, Jesse James, Brodix, Dart Iron Eagle and Dart Pro 1 and Pro 2 heads as well. Shims are available in copper, black, gold, polished and silver, in thicknesses from .025” up to .200”. Stand bolts are available in T-45 or T-50 hardness.