The Texas Speed 1.7 Adjustable Shaft Mount Roller Rocker Package for Cathedral Heads is a shaft-mounted rocker set for LS engines with cathedral-port cylinder heads, including the LS1, LS2, LS6 and 4.8L, 5.3L and 6.0L truck heads. The rockers are machined from 17-4 stainless steel with CHE bronze trunnions, roller tips and swedged roller pins, and the design is Spintron tested in-house at Texas Speed.
Mounting the rockers on a shaft that bolts to the factory rocker pedestals gives more valvetrain stability than individual pedestal rockers, which Texas Speed recommends for high-performance and solid roller camshaft applications. The roller tip reduces valve tip wear and the 1.7 ratio is adjustable for lash setup. Texas Speed tall valve covers are required, stock valve covers will not fit, and minor cylinder head trimming may be needed depending on casting variation.
Specifications
- Rocker ratio: 1.7, adjustable
- Mount type: Shaft mount, fits factory rocker pedestals
- Material: 17-4 stainless steel
- Trunnions: CHE bronze
- Tip: Roller tip, reduces valve tip wear
- Roller pins: Swedged for durability
- Testing: Spintron tested in-house by Texas Speed
- Application: GM LS cathedral-port cylinder heads
- Recommended for: Solid roller camshaft applications
- Included: Complete shaft mount roller rocker set
- Valve covers: Texas Speed tall valve covers required; not compatible with stock valve covers
Kit Includes
- Complete 1.7 adjustable shaft mount roller rocker set
Note: Requires Texas Speed tall valve covers; not compatible with stock valve covers. Minor cylinder head trimming may be required depending on casting variation.
FAQ
What cylinder heads does the Texas Speed 1.7 adjustable cathedral rocker package fit?
It fits GM LS cathedral-port cylinder heads, the design used on the LS1, LS2, LS6 and the 4.8L, 5.3L, 5.7L and 6.0L Gen III and Gen IV truck engines. The rockers bolt to the factory rocker pedestals.
Can I use stock valve covers with Texas Speed shaft mount rockers?
No. Texas Speed states the shaft mount rockers are not compatible with stock valve covers; Texas Speed tall valve covers are required and minor head trimming may be needed depending on the casting.
What is the difference between the 1.7 adjustable and 1.72 Texas Speed cathedral rocker packages?
The 1.7 adjustable package uses 17-4 stainless adjustable rockers recommended for solid roller cams. The 1.72 package is a steel 1.72 ratio shaft mount set with a TSP/CHE twin rocker shaft and bushings aimed at performance street builds and camshaft upgrades.
Why choose shaft mount rockers over stock LS rockers?
A shaft ties the rockers together on a rigid mount, which Texas Speed recommends for valvetrain stability in high-rpm and solid roller applications where individual pedestal rockers can deflect.
Are the Texas Speed cathedral shaft mount rockers sold as a set?
Yes. Texas Speed sells the package as a complete shaft mount roller rocker set for the engine, with 17-4 stainless rockers, CHE bronze trunnions and roller tips.
