Product Description

BTR Brian Tooley Racing Shaft Rocker Kit for Frankenstein M311 Heads

Fits Frankenstein M311 and M311 Boost Monster Cylinder Heads – Will NOT Fit Factory LS3 Heads

The BTR Shaft Rocker Kit for Frankenstein M311 Heads is the ultimate solution for valvetrain stability and performance in high-horsepower LS builds. Engineered by Brian Tooley Racing, this system is designed exclusively for M311 and M311 Boost Monster heads, offering significant reductions in valvetrain deflection compared to traditional bolt-on rocker setups. By using a shaft-mounted design, this kit ensures improved rocker geometry, enhanced durability, and greater valve control at high RPM.

Each kit features a billet steel stand equipped with four precision-machined 52100 bearing steel shafts per cylinder head, delivering superior strength and rigidity. The system includes upgraded fasteners, high-quality bearings, and precision shims for improved assembly and adjustment. Designed to work with your existing stock rocker arms or compatible BTR rocker arm bodies, this kit brings elite race-level shaft rocker performance to your Frankenstein M311 platform without the need for custom components.

Key Features:

Specifically designed for Frankenstein M311 and M311 Boost Monster cylinder heads (not for LS3 heads)
Billet steel rocker stands provide unmatched rigidity and strength under load
Genuine 52100 bearing steel shafts ensure long-lasting durability and stability
Five-bolt mounting per rocker pair eliminates flex and improves rocker geometry
Updated V2 design with thrust shim setup allows easier assembly compared to snap ring configurations
Compatible with stock rocker arms and BTR rocker arm bodies
No rocker arm bodies included – base hardware kit only