HPF STAGE 4 | 390KW

VT-VZ V8 HPF STAGE 4 | 390KW

The HPF VT-VZ Stage-4 upgrade starts with our trained technician setting your vehicle up on our 2WD dynamometer and performing a baseline dyno run. This allows us to firstly make sure everything is working A-OK and secondly it gives us a standard figure from your car to compare to once the upgrade is completed. We then commence the upgrade package by removing the engines standard camshaft and lifters and fit a high-performance camshaft package utilizing premium Brian Tooley Racing products jumping the power and attitude of the engine to a whole new level. Once the engine is back together, we continue by fitting an over the radiator cold air intake with a serviceable K&N air filter and adding a new Pacemaker stainless steel dual 3" cat back exhaust system, 4-1 headers (extractors) and high flow metallic catalytic converters all to increase the engine's breathing capabilities and to give it that nice V8 sound we all love! We then custom tune your vehicle's ECU on the dyno utilizing the latest ECU tuning software to maximize power and torque and to optimize fuel efficiency. We complete the upgrade process by testing your vehicle on the road to make final adjustments, optimizing your vehicle's performance and driveability. This is all completed in four to five days and at the end of this upgrade you will be provided with a dyno graph detailing the power & torque increase of your vehicle. Flex Fuel (E85) is an option, talk to one of our Sales Representatives.

• Cold air intake - The ‘Over the Radiator’ Air Induction (OTR) system features a large diameter free-flowing intake path to ensure maximum performance from your LS1 powered vehicle. It features a large surface area panel air filter mounted directly in front of the engines throttle body and is designed to draw straight in from the grille opening. This design assists in minimizing the restriction of air flow and eliminates the intake of hot air from inside the engine bay.
• Dyno Tuning – By optimizing the engine tune parameters in the vehicles PCM to suit 98 octane fuel, we are able to increase both power and torque and maximise fuel economy. Late model naturally aspirated cars are generally tuned very well from the manufacturer so depending on the vehicle platform mechanical parts to improve the engines intake & exhaust flow may need to be added to really get good gains. Engines fitted with a turbocharger from factory are much easier to enhance as increasing boost pressure by tuning works extremely well.
• Catback Exhaust system – A ‘Catback’ system is basically all the parts of the exhaust after the catalytic converters. It’s the section of exhaust where all the mufflers are placed and by using larger diameter pipe and high flowing mufflers more performance and better sound is achieved. HPF chooses Pacemaker Exhausts for the VT-VZ Commodore platform. Made in Richmond, South Australia for almost half a century, Pacemaker are synonymous with performance and quality. Pacemaker build a quality stainless steel dual 3” system and some model specific phat tips. The sound is deep and meaningful.
• Headers & High flow cats – Also known as extractors, we chose a 4-1 design as over the years 4-1 headers have proven their advantage over the tri-y design. 4-1 Headers are offered in a few different sizes for different engine applications or modification levels. The catalytic converters chosen are higher flow and feature 100 cpi (cell per inch) for maximum performance. The catalyst matrix is coated metal so they are built to last. The catback exhaust bolts to the catalytic converters.
• Dyno Tuning – By optimizing the engine tune parameters in the vehicles PCM to suit 98 octane fuel, we are able to increase both power and torque and maximise fuel economy. Late model naturally aspirated cars are generally tuned very well from the manufacturer so depending on the vehicle platform mechanical parts to improve the engines intake & exhaust flow may need to be added to really get good gains. Engines fitted with a turbocharger from factory are much easier to enhance as increasing boost pressure by tuning works extremely well.

• Cam package – Utilizing the latest in Spintron technology, Brian Tooley Racing (BTR) in Kentucky, USA lead the way in valvetrain component design. The Spintron machine allows BTR to effectively test and design camshaft and valvetrain products to ensure stability and longevity like no other device. HPF is not shy in leveraging BTR’s extensive testing and as such, our product list for the cam package includes BTR’s camshaft, Platinum dual valve springs and V2 rocker trunnions. Supporting the BTR components, we use made in Australia, Rollmaster heavy duty single row timing chains and Crow Cams pushrods. Cam selection should be based on driving expectations and should be discussed with one of our HPF representatives. We recommend new hydraulic lifters in higher milage engines.

Package Includes

1 x Before dyno run
1 x Custom dyno tune
1 x Over radiator cold air intake
1 x 3" Pacemaker Stainless steel 409 catback exhaust & S/S tips
1 x Pacemaker 1-3/4" extractors & high flow cats
1 x High performance HP-F spec camshaft
1 x Pair GM MLS head gaskets
1 x Set GM Head bolts
1 x Set GM LS7 hydraulic lifters & buckets
1 x BTR AFM / DOD delete bungs
1 x Rollmaster SR timing chain set
1 x BTR Rocker Trunion Upgrade
1 x Set HD pushrods 7.400" Super Duty
1 x Set High performance Double valve springs
1 x Set ARP camshaft bolts
1 x Oil pump o-ring seal
1 x Harmonic balancer seal
1 x Timing cover gasket
1 x GM balancer bolt
1 x Engine oil filter
1 x Synthetic Castrol engine oil
1 x Coolant
14 x Labour

Key Features

Check out the graph, more torque and more power everywhere! Again, zero down sides.

Notes

• Power figures are estimates only and actual figure's may vary based on each specific vehicle.
• We recommend all vehicles coming to HPF for tuning run 98 Octane fuel. Please contact us if you have a need to use different fuel.
• Quoted power figures are approximate and calculated at the flywheel.
• Modifications such as this package require the vehicle to be in excellent mechanical order.
• We advise against increasing the power output substantially on high kilometer engines, if your engine has in excessive of 150,000kms please contact us to discuss options.
• Whilst every attempt is made to ensure prices listed online are correct, they are subject to change at any time.
• Additional parts may be required in some cases depending on the condition of the vehicle. Cost of these parts and additional labor required may incur additional cost.
• Final price may vary dependent on specific options chosen.
• Some automatic transmission models may require a cooler kit at additional cost.
• Images are for illustration purposes only.

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