G & J Differential Services– Everything from Ford 9” DiffConversions to Replacing Centre Bearings and Universals

At G&J Differential Services, our expertise and customer service make us the leaders in our field. We service all two and four wheel drives, supplying and fitting new gears for front and rear diffs, e-lockers, air-lockers,TrueTrac,Detroitlockers, Fullspools and Minispools for most cars, including VE Differentials. We pride ourselves on delivering quality outcomes for our customers.

Our workshop is equipped with the latest equipment and an extensive range of diff parts and accessories, which we combine with years of experience to offer you superior customer service and quality mechanical servicing and repairs.


We are your one-stop shop for differential parts and services. No job is too big or too small for our team of mechanical experts. Come to G & J Differential Services for:

  • Repairs and changeovers on all makes and models
  • 9" diff conversions(including Ford 9” conversions)
  • New and second hand parts and
  • Axle straightening
  • Car parts


We even offer high speed differentials for 4x4s.

Tailshaft Balancing

Ace Balancing offers a range of professional tailshaft services, including:

  • Remanufacturing
  • Custom tailshaft manufacturing
  • Digital balancing
  • Shortening
  • Propeller shafts
  • Replacement of sealed central bearings and universals on tailshafts
  • Specialised balancing (on request)


We supply and fit high performance chrome moly tubing in 2.5" and 3" O.D. with 0.083" wall thickness. All tubing is imported from the USA. Our workshop is equipped with high-grade machinery to allow precision manufacturing and modification of custom tailshafts to suit your needs.

Mechanical repairs and servicing

Keeping your vehicle servicing up to date will keep your car running smoothly for longer, and will help reduce the need for major mechanical repairs or rebuilding down the track. G&J Diffs and V&J Motors offer a complete range of mechanical servicing and repairs for most makes and models, including regular passenger vehicles, commercial vehicles, 4WDs, diesel vehicles and LPG vehicles.

Our services include:

  • Major and minor servicing
  • Scheduled and logbook servicing
  • Brake and clutch repairs
  • Safety checks
  • Transmission service
  • Diesel servicing
  • LPG servicing and repairs
  • Steering and suspension
  • Wheel balancing
  • Tyres
  • Muffler and exhaust repairs


Please consider the experts at G&J Differentials and V&J Motors for your next vehicle service and any mechanical repairs.

Gearbox repairs and changeovers

At G & J Diffs we specialise in gearbox changeovers and repairs. We repair most gearbox makes and models, including light commercial vehicles and 4WDs. We also supply and fit reconditioned gearboxes.

LPG and EFI Tuning

Maintenance and tuning of your LPG system and is just as important as the upkeep of the rest of your vehicle. Regular fuel injection maintenance ensures good fuel economy, driveability and reliability. The staff at G & J Differentials is experienced at repairing EFI components and LPG systems from a variety of manufacturers. We're constantly training and keeping up to date with the latest developments in manufacturers guidelines and industry techniques, so we can offer you the highest quality EFI and LPG inspection and tuning.

Engine Changeovers

Street & Strip Gears is an importer of Chevrolet engines from a variety of models. Our workshop is equipped to offer quality engine changeovers for all makes and models.

Bearing and Universal Manufacturing

Street & Strip Gears stands as one of the leaders in bearing supply and remanufacture in Victoria. Our team of qualified mechanics and engineers develop our products to meet the highest standard of quality. Our shop is equipped to manufacture a range of quality bearings in all sizes and to suit all applications.

No matter what products or services you need, whether it’s a complete Ford 9” diff conversion or a replacement of your tailshaftcentre bearing and universals, you can trust the team at G & J Differentials to provide you with the excellent service and advice you require. Feel free to get in touch with us via our online contact form and one of our friendly staff will be happy to respond.