If you’re looking at extracting the absolute most out of the Holden supercharged V6, look no further than our extreme package. We have fine-tuned this kit to only include the best of what Mace has to offer and make sure you cross the line first. The following list of products is aimed toward 'high-end' L67 builds and will result in power figures in excess of 240rwkw and around 1000nm of torque with 98 octane. This combination of mods will produce 12-second quarter mile times in a full-weight VT-VY commodore and 11s in a lighter car such as the VN-VS. We have received feedback from customers in the past who have attained over 300rwkw from the following mods on a standard stroke engine with the use of Ethanol based fuels.
- Boost Upgrade kit
- Cold air intake for VS L67 V6/ Cold air intake for VT-VY L67 V6
- Cooler thermostat
- Bored out throttle body (95-02, 02-04)
- Intermediate Blizzard intercooler/ Mini Blizzard intercooler / A2A intercooler
- PERFORMANCE CAMS
- Crowcams heavy-duty valve springs
- LS1 retainers
- Rollmaster double-row timing chain*
- Machined oil pump cover
- Viton valve-stem seals
- Comp valve locks
- Crowcams heavy-duty hydraulic lifters
- Crowcams heavy-duty pushrods
- CNC machine-ported cylinder heads
- 5% overdrive harmonic balancer
- JE forged pistons
- Spool forged H-beam conrods
- Full manifold and blower port
Power figures will vary depending on a variety of factors including but not limited to; selected intercooler/camshaft, engine condition, pulley size, transmission, and dyno used. A custom dyno tune is mandatory following an intercooler/camshaft upgrade. Please contact us for performance workshops we can recommend around your area that specialize in these motors.
In order to make full use of the above-mentioned combination, we also recommend running an upgrading fuel system including a hi-flow fuel pump, injectors, and a full exhaust system.
A 4” intake pipe can be used in conjunction with an LS1 throttle body (can supply) and throttle body adapter kit (can supply) to achieve greater results but the airbox will have to be modified to suit the larger diameter pipe. This is a fairly straightforward modification.
The full manifold and blower port is a service we offer but we require your blower and manifold to be sent up first. Please contact us for further details and pricing.
The CNC machine ported heads are made to order so please allow 1-2 weeks for delivery.
Fitting instructions for most of these parts are readily available on our website.
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