The Texas Speed 1.8 Adjustable Shaft Mount Roller Rocker Package for 260cc Heads is a high-ratio shaft-mounted rocker set for LS engines running LS3 260cc or PRC 260 cylinder heads. The rockers are machined from 17-4 stainless steel with CHE bronze trunnions and swedged roller pins, and the design is Spintron tested in-house at Texas Speed for valvetrain stability.
The 1.8 ratio multiplies camshaft lobe lift more than the 1.7 version, giving more valve lift and area from the same cam, while the shaft mount bolts to the factory PRC 260 rocker pedestals and keeps the rockers aligned under high spring loads. Texas Speed recommends the package for solid roller camshaft applications. Texas Speed tall valve covers are required, minor cylinder head trimming may be needed depending on casting variation, and valve cover and head clearance should be verified before installation.
Specifications
- Rocker ratio: 1.8, adjustable
- Mount type: Shaft mount, fits factory PRC 260 rocker pedestals
- Material: 17-4 stainless steel
- Trunnions: CHE bronze
- Roller pins: Swedged for durability
- Testing: Spintron tested in-house by Texas Speed
- Application per Texas Speed: LS3 260cc cylinder heads with PRC 260 rocker pedestals
- Recommended for: Solid roller camshaft applications
- Included: Complete rocker arm set
- Valve covers: Texas Speed tall valve covers required
Kit Includes
- Complete 1.8 adjustable shaft mount roller rocker set
Note: Requires Texas Speed tall valve covers. Minor cylinder head trimming may be required depending on casting variation. Verify valve cover and cylinder head clearance before installation.
FAQ
What cylinder heads does the Texas Speed 1.8 adjustable rocker package for 260cc heads fit?
Texas Speed lists it for LS3 260cc cylinder heads and states it fits the factory PRC 260 rocker pedestals, so it is intended for PRC and TSP 260cc LS3-style heads rather than cathedral-port heads.
What is the difference between the Texas Speed 1.7 and 1.8 ratio 260cc rocker packages?
Both are 17-4 stainless adjustable shaft mount rockers with CHE bronze trunnions for LS3 and 260cc heads. The 1.8 ratio produces more valve lift from the same camshaft lobe than the 1.7, so spring, retainer and piston-to-valve clearance need to be checked for the added lift.
Do the 1.8 shaft mount rockers require special valve covers?
Yes. Texas Speed tall valve covers are required, and minor trimming of the cylinder head may be necessary depending on casting variation. Texas Speed advises verifying valve cover and head clearance before installation.
Are these rockers for hydraulic or solid roller cams?
Texas Speed recommends the 1.8 adjustable shaft mount rockers for solid roller camshaft applications, where the adjustable design sets valve lash and the shaft mount holds the valvetrain stable at high rpm.
What are the Texas Speed 1.8 shaft mount rockers made of?
The rockers are machined from 17-4 stainless steel with CHE bronze trunnions and swedged roller pins, and each design is Spintron tested in-house by Texas Speed.
