HOLDEN L67 V6 1.6 RATIO - 5/16" SHAFT MOUNT Holden Buick Series 2 Ecotec V6 3800 Roller Rockers

YT6669 Yella Terra L67 Roller Rockers, Holden/Buick Series 2 Ecotec V6 3800 

Ultralite

The YT6669 Yella Terra L67 Roller Rockers are an exclusive Ultralite rocker arm, shaft and pedestal system offers 50% less nose weight than the factory L67 rockers system, the result being higher RPM potential without compromising strength or durability. The perfect low-maintenance substitute for factory rocker arms which utilise problematic cage-less bearings, solid non-roller tips and heavy steel bodies.

Yella Terra Ultralite L67 rockers are ideal for high revving V6 Ecotec street applications when coupled with factory/lightweight aftermarket springs. Manufactured and assembled in Australia using the best quality materials and componentry consistent with those found in our Platinum race series.

Our wide range of L67 roller rockers have true ratios & allows high lift without relying solely on your camshaft… a trend many Ecotec V6 engine builders and racers alike are adopting to relieve the inertia on lifters and pushrods generated by aggressive and often violent ramp rates required to make big lift. 

Don't fall victim to bearing/trunnion upgrades which only address half the shortcomings of OEM L67 rockers.
 

Why Choose Ultralite L67 High Ratio Rockers?

• Built to withstand 400lbs* max open spring pressure
• Oversize full-complement caged bearings designed for oscillating (rocking) loads, paired with oversize precision ground trunnions to reduce friction.
• Intricately balanced lightweight arms ensuring vital valvetrain stability - focusing attention on the harmony of the entire engine. 50% less oscillating nose weight eliminates valve float in upper RPM range allowing for higher rev ceiling.
• Extruded from aircraft grade aluminium, perfect for dissipating excess top-end heat.
• Proven L67 Ecotec 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.
• Various ratios available, catering for every camshaft grind. High ratios allow for additional lift on stock and aftermarket camshafts.
• 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.
   

SPECIFICATIONS
MAKE:  BUICK & HOLDEN Various models

ENGINE:  Ecotec, 3.8 V6/ L67

YEAR: Various

PART TYPE: Full Roller Rocker 

MOUNTING STYLE: Single Shaft

ROCKER ARM RATIO: 1.6:1

STUD SIZE: 5/16"

ADJUSTABLE:     -

HYDRAULIC: Hydaulic

ROCKER ARM STYLE: Full roller

SHIMS INCLUDED: No

ROCKER MATERIAL: Aluminium

SELF-ALIGNING: No

ROCKER ARM BODY STYLE: Standard

ROCKER ARM NUT STYLE: Capscrew

MAX SPRING DIAMETER: 1.437"

INLET OFFSET    -

QTY: SET OF 12

BRAND: Ultralite

NOTE: Easy Fit, no machining required. 

 

 

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