HOLDEN V8 1.65 Roller Rockers, 5/16" Shaft Mount, Adjustable, 304 308 5.0L 1.65, Pro Street, Bolt On Down

YT6309, Yella Terra roller rockers, Holden V8 Bolt On, Adjustable, Shaft Roller Rockers. PRO STREET

Easy Fit, both the VN EFI heads and the Early Carby cylinder heads.

YELLA TERRA Designed for high revving street/strip applications. No other comparable product can compete with 600lbs* maximum open spring pressure whilst retaining factory size bolt-down hardware

The Yella Terra vacuum die cast arm is designed and engineered for optimum strength without the costs associated with billet CNC machining. The Street Terra series utilises the extreme duty hardware from our premium Platinum race series - ensuring a lifetime of trouble free performance. Our Easy-Fit (EF) kits are a cost effective alternative for factory stamped steel rocker arms, which can be installed within less than an hour without cylinder head removal and in most cases without machining.

These Yella Terra Roller Rockers ST2033 are popular amongst standard rebuilds where OEM equipment is worn and or scarce. These Bolt On Shaft roller rockers are also well suited as mild street applications. The Street Terra ST2033 are Ideal replacement for factory stamped GMH rockers that have seen decades of wear and tear!

Why Choose Yella Terra Street Terra?

• Vacuum die cast arms built to withstand 450lbs* max open spring pressure
• Oversize full-complement caged bearings designed for oscillating (rocking) loads, paired with oversize precision ground trunnions to reduce friction.
• Various ratios available, catering for every camshaft grind. High ratios allow for additional lift on stock and aftermarket camshafts
• Proven bolt-on shaft mount design that mounts both inlet/exhaust to common shaft, effectively increasing footprint and clamp load twofold without any further cylinder head modification
• Chrome moly steel hardened and ground roller tips of generous diameter (positively retained by internal circlip) preventing abrasion of valve tips and guides commonly seen with non-roller tip rockers. Allows for smoother, quieter operation. Maintains lash and reduces necessary and tedious engine maintenance 

Easy Fit  Shaft - Adjustable - Suitable for both HYDRAULIC and SOLID camshafts

The original "bolt on" rocker. Simply remove old rocker gear and replace with the shaft assembly that bolt onto the original mounting holes with no modification. Tremendous rigidity. 

When installing adjustable rockers, double cork gaskets or taller rocker covers may be required. Please check clearance exists between Lash adjuster & Rocker covers at maximum lift. 

* Bolt On Yella Terra Easy Fit on Holden V8 253 & 308 Factory Cylinder Heads (1969-1988)

* Please note: ST 2032 & ST 2033 Rockers are a generic fit Holden bolt on for EFI VN 304, 355 Engines (1988-2000). These rockers are not suitable for high spring pressure applications (solid roller)

For perfect offset roller valve position we recommend YT 6309 Pro Streets for EFI VN 304, 355 Engines (1988-2000)

Total Performance is a Yella Terra Distributor