Suitable for all Holden VZ 6L and VE 6L L76, L77, L98 & L99 engines and VE HSV LS3 6.2L engine.
Not suitable for VZ or VE HSV'S with LS2 6L or LS7 7L engines.
Fitting a set of higher-ratio rockers to your engine is one of the easiest and most cost-effective ways to boost your Holden Commodores performance.
Long known and respected as the place to come for high-ratio roller rockers for the Buick and Ecotec V6 engines, we are now offering high-ratio roller rockers for VZ-VE L76, L77, L98, L99, LS3 engines as part of our growing line-up of V8 performance parts.
Offering average peak power gains of 5%, even without a tune or supporting modifications, the additional improvement in power output and seat of the pants performance make our 1.9:1 high-ratio roller rockers an excellent choice for your VZ-VE L76, L77, L98, L99, LS3 V8.
Using the same OEM technology and manufacturing processes as our highly successful V6 line of rockers, our V8 roller rockers are strong and light, offering a 1.9:1 ratio (stock ratio is 1.7:1).
This increase in rocker ratio works in much the same way as fitting an aftermarket camshaft with higher valve lift, but without the complexity and expense of purchase and fitment, that can cost you thousands.
Your engine breathes better, creating more power and torque.
Fitment is easy and can be handled by DIY enthusiasts of all skill levels in as little as an hour, using basic tools.
You can use your existing valve springs with the 1.9:1 high-ratio roller rockers. However, we do recommend upgrading to an improved CROW 4918 valve spring. This is especially recommended if you are retuning your Commodores ECU and altering the rev limit of your engine, where the stresses on your valve train are increased.
You'll enjoy a guaranteed power increase with our 1.9:1 high-ratio roller rockers.
Greater gains can be achieved with our 1.9:1 high-ratio roller rockers when used in conjunction with other supporting modifications, such as a cold-air intake, upgraded exhaust system, and custom tune or any combination of these items.
If you have already performed some of these modifications to your VZ-VE V8 Commodore, the fitment of our 1.9:1 high-ratio roller rockers can bring even greater gains all with the same simple 1-hour DIY installation!