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Performance Rebuild 3S 5-Speed


3S 5-Speed Transmission built for strength and longevity

This transmission rebuild is recommended for all AWD 3S cars (3000GT, Stealth) with up to around 800 HP. 

As many AWD 3S owners know it is nearly impossible to rebuild your unit. Parts are not available through the dealer and many companies will not touch it. Most shops that do don’t have access to all of the parts needed for a quality and reliable rebuild. We can replace all synchronizer assemblies and bearings, not just a few small parts. Our rebuild of your 3S AWD 5-speed unit is very thorough and will perform and look better than new when you get it back!

We also spend a lot of time on synchro timing, alignment and operation to give you the best shift possible.  Click -> Synchro Blueprinting

This transmission rebuild includes everything in the list below:

  • 1st - 2nd Friction Liners
  • 3-5 Synchros
  • Output Shaft / CV Seals
  • Intermediate Shaft Bearings (Both Ends)
  • 300M Output Shaft (18 or 25 Spline)
  • Welded Bell Housing Brace (Strength Upgrade)
  • Micropolish Gear Treatment (Reduces Friction / Lubrication Temp / Longer Gear Life)
  • Reset Bearing Pre-loads for Maximum Bearing and Gear Life
  • Exterior Case High Temp Clear Coated

Want to push your transmission even further? Consider upgrading your Front Diff to a Quaife (includes new bearings) or changing out your aging Viscous Coupling / Center Differential assembly with a Torsen Center LSD. We are also offering WPC treatments to the transmission internals! 

The SCE Torque Biasing Center differential enables your car to accelerate quicker and corner faster. How? By reducing the understeer and by sending the power to the wheels that could use it! Combine this with the Quaife, and never worry about having a diff failure!

WPC Gear Treatment

WPC is a permanent surface treatment that reduces friction while strengthening the part. Its unique micro-dimple formation pattern greatly reduces friction and is unmatched by conventional methods of surface treatment. It is a proven process that has been utilized for many years in the racing and automotive industry and is complimented by utilizing our Micropolish treatment. WPC can strengthen parts in two ways. First it adds an extremely high level of compressive stress at, and near, the surface. The second, is that the WPC treatment creates a Nano - Crystalline structure at the surface of the metal. Both of these mean that metal fatigue and crack initiation are both noticeably reduced; thus strengthening the gears and shafts inside of the transmission.

We spend a lot of time on synchro timing, alignment and operation to give you the best shift possible.  Click -> Synchro Blueprinting

Note: The early style 5th gear synchro has been discontinued by Getrag. In these cases, we will take a newer style and modify the key / ramps to allow it to fit with an early style hub/sleeve assembly.

Parts cleaned using industrial parts washers and case exterior is coated.  Exceptionally clean units is one of the reasons why our transmissions are the highest quality in the business!  We have state-of-the-art cleaning equipment which other trans builders could only dream of.  More info HERE

With the best cleaning equipment, we also have a very clean facility.  All units are built in a spotless environment and using tools, and benches, which are clean and only used for assembly purposes.  In other words, the same tools used to pull your dirty old trans out of your car are NOT the same tools used to rebuild your pristine unit afterward. Take a look at the typical shop and check their tools.  It is shocking how dirty things are in most shops and that dirt will end up in your unit.  That does not happen here. 


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