We are one of the only workshops in Australia that don't outsource any of the work for a Head and Cam Package! Using our 5 axis CNC machine in house to port all of our world famous V3 LS CNC Heads! We also have a famous range of camshafts that have powered some of the fastest street cars in Australia!
Our head and camshaft packages have also won a World Championship & 3 National Championships in the V8 Superboat series!
We don't just talk the talk, we walk the walk just as well!
World Class Dyno Facility
Phonsy, with his state-of-the-art mainline dyno, has perfected tuning for over 5000 Holden Commodores in the past two decades. The unparalleled data amassed during this period sets him apart in the industry. Rest assured that bringing your Holden to Phonsy means you're in expert hands!
Step 1 Choose Your Package
Base Price
Whats included
-GMM Hi Performance Camshaft of your choice [mild to wild] -PSi Hi Performance Valve Springs -Hi Performance Chrome Moly Pushrods -GMM CNC Ported Heads -GM Head Gaskets -ARP Cam Bolts -GM Cam Sprocket -Head Gaskets -Full Custom Maf-Less Dyno Tune -ASP Spark Plug Leads -Dyno Print Out -All labour
Pricing Structure (Starting From)
Holden VT-VZ 5.7L $6,795 VE SS 6.0L $6,795 VF 6.0L $6,795 VF 6.2L $6,795
Engine Extra's -Automatic Transmission Tune +$195 -DOD Delete With LS7 Lifters & Buckets for L76 & L77 +$690 -LS7 Lifters & Buckets +$550 -Ramjet OTR +$600 - Oil Pump (Melings 295, sump gasket, O-ring Blue, 7.5L Oil and Oil Filter, Labour x5 ) $1,500 -Supply and set spark plug gap to engine combination +$150 - ARP Balancer Bolt +$99 -Torque Converter- supply & fit +$3200 - Rocker Trunnion Bearing upgrade +$899
EXHAUST UPGRADES (Supply & Fit) -Extractors & 2.5 inch Cats +$1,900 -Extractors & 3inch Cats +$1950 -Catback 2.5 inch +$,1690 -Catback 3 inch +$1,800 -Full 2.5 Inch System +$3,499 -Full 3 inch system +$3,749
Had an OTR and tune done on my wagon, pulled great numbers and couldn't be happier with the workmanship and service I received at GM Motorsports. Thanks to the team!!
-Andrew Smith
Had my car done with a Turbo Killer Cam & Hi-Stall don’t regret it one bit, Awesome Service as Always, more than helpful, highly recommended
-STREETL0W
Over the years Ive had a few cars in for performance work with gm Motorsport, they are very friendly and always answer any questions you have for them, very reliable workshop, highly recommended!