The Texas Speed LS3 1.7 Adjustable Shaft Mount Roller Rocker Package is a shaft-mounted, adjustable rocker system for LS3, L99, L92, LSA and LS9 rectangular-port cylinder heads running solid roller camshafts. It uses a CHE twin shaft arrangement with CHE bronze trunnions that bolts to the factory rocker pedestals, so the heads do not need to be machined for stands.
The rockers are made from 17-4 stainless steel with a swedged roller pin for durability and have been Spintron tested by Texas Speed. The 1.7 ratio matches the factory LS3 ratio while adding lash adjustment for a solid roller valvetrain. The package is sold as a complete set and requires Texas Speed tall valve covers; minor trimming near the valve cover rail may be needed on some head castings, so clearance should be checked before final assembly.
Specifications
- Rocker ratio: 1.7, adjustable
- Mounting: Shaft mount, CHE twin shaft, fits factory rocker pedestals
- Trunnions: CHE bronze
- Material: 17-4 stainless steel
- Roller pin: Swedged for durability
- Testing: Spintron tested
- Cylinder head fitment: LS3, L99, L92, LSA and LS9
- Camshaft: Recommended for solid roller camshaft applications
- Valve covers: Texas Speed tall valve covers required
- Quantity: Sold as a complete set
Note: Texas Speed tall valve covers are required. Minor trimming near the valve cover rail may be required depending on the cylinder head casting. Verify valve cover and cylinder head clearance before installation.
FAQ
What cylinder heads do the Texas Speed LS3 1.7 shaft mount rockers fit?
Texas Speed lists the package for LS3, L99, L92, LSA and LS9 rectangular-port cylinder heads. The twin shaft system bolts to the factory rocker pedestals, so no stand machining is required.
Are these rockers for hydraulic or solid roller camshafts?
Texas Speed recommends the adjustable shaft mount package for solid roller camshaft applications, where the adjusters are used to set valve lash. They are built for high-performance LS engines rather than a stock-style hydraulic roller setup.
Do I need different valve covers with this rocker package?
Yes. Texas Speed tall valve covers are required to clear the shaft mount rockers, and minor trimming near the valve cover rail may be necessary on some cylinder head castings.
What are the rockers made of?
The rocker bodies are 17-4 stainless steel with a swedged roller pin, mounted on CHE bronze trunnions on a CHE twin shaft. Texas Speed Spintron tests the design.
What is the difference between the 1.7 and 1.8 ratio Texas Speed shaft mount rocker packages?
The 1.7 ratio matches the factory LS3 rocker ratio, while the 1.8 ratio package increases valve lift and velocity for a given camshaft lobe. Texas Speed lists this 1.7 package for LS3, L99, L92, LSA and LS9 heads.
Is this a vehicle-specific part?
No. Fitment is determined by the cylinder head, not the vehicle. The package fits LS3, L99, L92, LSA and LS9 heads in any chassis, including LS swaps.
