This main cap girdle is designed to reduce "cap walk", stop block web flexing and eliminate cracking of the main caps/block webs; this is achieved by boxing in the main caps. Our light weight girdle evenly distributes load and dampens harmonics by bolting the main cap studs together to create a super strong rectangular cage. The brace nearly doubles the main web support area in the engine.

In addition, due to the close proximity of the main stud girdle to the crankshaft and rods it also aids in stripping oil off of the crank, which in itself yields a net gain in HP.

Fabricated from 12.5mm thick 6061-T6 aluminium, these girdles are a must for high rpm/high horsepower applications where block rigidity is critical.

Contents:

• 1 X Alloy main girdle

 Vehicle Fitment Guide

Notes:

• This girdle is compatible with OEM windage tray, main caps and sump.
• This girdle will clear up to a 4" stroke.

This main cap girdle is designed to reduce "capwalk", stop block web flexing and eliminate cracking of the main caps/block webs; this is achieved by boxing in the main caps. Our heavy duty girdle evenly distributes load and dampens harmonics by bolting the main cap studs together to create a super strong rectangular cage. The brace nearly doubles the main web support area in the engine.

In addition, due to the close proximity of the main stud girdle to the crankshaft and rods, it also aids in stripping oil off of the crank, which in itself yields a net gain in HP.

Fabricated from 12.5mm thick high strength steel, these girdles are a must for high rpm/high horsepower applications where block rigidity is critical.

Contents:

• 1 X Steel main girdle

Vehicle Fitment Guide

Notes:

• The images are for illustrative purposes only.
• This girdle is compatible with OEM windage tray, main caps and sump.
• This girdle will clear up to a 4" stroke.
• Custom length main studs are required. These can be purchased from any authorized ARP dealer.

If you think you've gone as far as you can with bolt-on performance parts or you are rebuilding your Holden V6, it's time to consider the benefits that only a high-performance camshaft and computer package can bring to the VX, VU and VY Ecotec L36 3.8L V6.

With the development of this package having taken place over a number of years, you can be assured that this is a solid one which will perform, whilst representing excellent value for money. For customers wanting a more aggressive cam package we've come up with computers to suit our range of mace cams, as shown below:

This cam and computer package is designed for use with totally stock heads, and stock valve train. Upgraded pushrods are recommended but not needed. Revving past 6200 RPM will require upgraded springs. Either 90 or 105# springs are recommended for high RPM use. This cam is designed for naturally aspirated applications where maximising the performance of stock heads is important. Idle is lumpy, especially with extractors. You can expect up to 19-26 kW gains depending on your car's current configuration.

Specifications:

• 216°/216° at 0.050"
• Intake Lift 0.317" (0.507" lift at 1.6:1 rocker ratio)
• Exhaust Lift 0.317" (0.507" lift at 1.6:1 rocker ratio)
• 111 LSA

Here is an example of how a stage 2 cam sounds on idle.

Here is an example of our Stage 2 cam and chip package in action (on a legal off-street burnout pad)

Contents:

• 1 X Camshaft
• 1 X PCM

Vehicle Fitment Guide

Parts Guide

Please select the part number you require from the drop down menu by utilising our vehicle fitment guide and parts guide.

Notes:

• The images are for illustrative purposes only.
• For the 2000 build WH series, please check your vehicle if it is running memcal or computer before making a purchase. Cam and chip (memcal) packages for 2000 build WH series can be purchased through another listing. 
• Computers in these packages are re-calibrated by Mace and we have strict guidelines in terms of what modifications our computers support. Your setup's compatibility will be determined on the basis of filled out application form. In case of non-compatibility, you can either change your setup to a compatible one or we can supply you with the cam only. *CLICK HERE* to download the blank application form and send it back to info@maceengineering.co.nz

This intake valve set has been specifically designed to suit Holden Ecotec & L67 Supercharged for both standard and boosted applications.

Specifications:

• Head diameter: 45.50mm.
• Stem diameter: 7.96mm.
• O/length: 120.00mm.
• Collet type: Single groove. 

Contents:

• 6 X Intake valve

Vehicle Fitment Guide

Notes:

• The image is for illustrative purposes only.
• Please be careful to check the size of the intake valves you require before making the purchase or contact us for further assistance.
• A single intake valve can be purchased through another listing.
• A set of 12 intake and exhaust valves can be purchased through another listing.

This exhaust valve set has been specifically designed to suit Holden Ecotec & L67 Supercharged for both standard and boosted applications.

Specifications:

• Head diameter: 38.61mm.
• Stem diameter: 7.98mm.
• O/length: 119.80mm.
• Collet type: Single groove. 

Contents:

• 6 X Exhaust valve

Vehicle Fitment Guide

Note: The image is for illustrative purposes only.

This exhaust valve has been specifically designed to suit Holden Ecotec & L67 Supercharged for both standard and boosted applications.

Specifications:

• Head diameter: 38.61mm.
• Stem diameter: 7.98mm.
• O/length: 119.80mm.
• Collet type: Single groove. 

Contents:

• 1 X Exhaust valve

Vehicle Fitment Guide

Note: The image is for illustrative purposes only.

This intake valve has been specifically designed to suit Holden Ecotec & L67 Supercharged for both standard and boosted applications.

Specifications:

• Head diameter: 45.50mm.
• Stem diameter: 7.96mm.
• O/length: 120.00mm.
• Collet type: Single groove. 

Contents:

• 1 X Intake valve

Vehicle Fitment Guide

Notes:

• The image is for illustrative purposes only.
• Please be careful to check the size of the intake valve you require before making the purchase or contact us for further assistance.

This exhaust and intake valve set has been specifically designed to suit Holden Ecotec & L67 Supercharged for both standard and boosted applications.

Specifications:

• Head diameter (Intake/Exhaust): 45.50/38.61mm.
• Stem diameter (Intake/Exhaust): 7.96/7.98mm.
• O/length (Intake/Exhaust): 120.00/119.80mm.
• Collet type: Single groove. 

Contents:

• 6 X Intake valve
• 6 X Exhaust valve

Vehicle Fitment Guide

Notes:

• The image is for illustrative purposes only.
• Please be careful to check the size of the intake and exhaust valves you require before making the purchase or contact us for further assistance.
• A single intake or exhaust valve can be purchased through another listing.
• A set of 6 intake or exhaust valves can be purchased through another listing.

Mace replacement rocker cover gasket set to suit all GM LS based engines. These press into the grove on the rocker covers just like the factory units to ensure a leak free seal.

Contents:

• 2 X Rocker/Valve cover gasket

Vehicle Fitment Guide

Note: These do not include the rocker cover grommets.

The Rollmaster Red series timing chain kit is manufactured to exacting standards using billet steel for both the crank and camshaft sprockets. This kit comes with a 7-key-way crankshaft sprocket to allow for more adjustment when dialing in the cam. Crankshaft sprocket key-ways are always in 2 degree increments unless otherwise stated. The relationship from crank key-way to camshaft sprocket timing is 2:1 meaning that the amount of advance or retard at the camshaft is in one degree increments i.e. 1, 2, 3 or 4 degrees. Multiple key-ways are a solid fixture and do not tend to move or work lose like offset dowels, thus providing positive locking of the cam timing to the desired position.

The Rollmaster timing chain kit is light weight but stronger than any other kit available due to the weight savings of billet steel and CNC machinery. No additional machining is required to fit this kit and there is no need for offset bushings or drilling of cam gears.

All Red series timing chain kits come with a standard billet steel construction, induction hardened crank gear and Rollmaster's own premium grade Iwis full roller timing chain.

This chain kit is suited for heavy duty applications or highly modified engines.

This Premium quality machine thinner oil pump cover, with precision ground finish and durable coating, allows extra clearance for your double row timing chain kit.

Contents:

• 1 X Timing chain (Single or Double row, refer to parts guide)
• 1 X Oil pump cover (refer to parts guide)
• 1 X Crankshaft sprocket
• 1 X Camshaft sprocket
• 1 X Oil pump drive

Vehicle Fitment Guide

Parts Guide

Please select the part number you require from the drop down menu by utilising our vehicle fitment guide and parts guide.

Notes:

• This timing chain kit will suit VR models with engine code VH1426331 onwards. Timing chain kit for VR models up to the engine code VH1426330 can be purchased through another listing.
• Please ensure your vehicle is found in the fitment guide prior to purchase.
• Given the age of the vehicle, it is likely that your engine may have been converted from an earlier or later model, meaning you may have to purchase a different chain. We will not be held responsible if the incorrect chain kit is purchased. A re-stocking fee will apply if an exchange is required.
• Double row timing chains require clearance between the oil pump and timing chains. For that our machined oil pump cover can be purchased through another listing.
• The machine thinner oil pump cover screw torque is 11 N.m.