Extreme Rebuild of GM 6L80E 6 Speed Automatic (includes Torque Converter)

$6,499.24 inc. GST

Due to high demand this product's lead time is 13 weeks.

Each Heavy Duty Extreme Transmission from Wholesale Automatic Transmissions is built to perform. Conditions apply to refundable deposit – see Description.

This will also add the following products to your cart:

  • Core Refundable Deposit - $1,000.00
SKU: REBUILD-EXTREME-6L80E Categories: , , Tag:

Description

This product can only be delivered to a business that can unload a pallet from a truck. This is a strict rule imposed by our freight companies.

All of Wholesale Automatic Transmissions heavy duty Extreme Rebuilds are meticulously built to handle not only to toughest of conditions, but also takes into consideration vehicle weight, larger tyre size, extreme towing conditions and most power upgrades. Each transmission has been fully stripped, cleaned and examined, all surfaces as required have been re-machined, every gasket, seal and ring have been replaced, all clutch frictions and bands where applicable have been replaced and upgraded depending on requirements. Valve bodies have been upgraded and oil filter replaced. Bushes, bearings and thrusts have either been upgraded, modified or replaced depending individual requirements. Torque converters have been rebuilt and upgraded. Please note that in some applications we have upgraded billet torque converter options available please see below in the “Customers also bought these” section to see if any of these torque converter upgrades are more suitable.

This transmission has also had its internal shafts planetary assemblies, hubs and drums cryogenically treated. This means that these parts have gone through a somewhat complex and technical process, cryogenic hardening offers several benefits, one of which is increased strength. When the temperature of metal drops, its atoms rearrange in a manner that increases the metal’s martensite and decreases the metal’s austenite. Martensite, of course, is an incredibly hard crystalline structure, whereas austenite is soft and ductile. Cryogenic hardening is able to make metal objects and workpieces more resistance to wear and tear. Metal doesn’t just become harder through cryogenic hardening – it becomes tougher and more resistant to wear. As a result, cryogenic hardening is performed to increase the usable life of metal objects and workpieces. Furthermore, cryogenic hardening offers stress relief of metal.

All transmissions come with a 12 month unlimited kilometer Australia wide warranty. Please note the warranty does not include any parts used in competition vehicles, or any off road events. Repairs & replacements under this warranty are subject to these conditions: whether the parts are repaired or replaced is at the option of Wholesale Auto’s. All claims must be returned to Wholesale Automatics. This warranty does not cover loss of vehicle use, time inconvenience, tow or recovery or any other damages, these costs are the customers. Goods must be returned to Wholesale before any claim will be processed.

This Rebuild Includes

Extreme Rebuild of GM 6L80E 6 Speed Automatic (includes Torque Converter). Kit includes:

– Deep Cast Transmission Pan

– Nomad Valve Body

– Performance Clutch Pack

– Modified Drum Set (Both Drums Modified)

– Cryogenically Treated Internals

– Double Kiln Bronzed Torque Converter

– Remachined Channel Surface

– Basic Dyno Test

– High Temp Epoxy Enamel with High Gloss Finish

Refundable Deposit Conditions

This transmission is sold on a changeover basis. The transmission you return to Wholesale Automatics must be suitable for rebuilding. If the transmission is returned with significant damage to shafts, drums, gears, case, valve body (in other words, ‘hard parts’) or has extensive rust ingress then all or part of your refundable deposit will be kept to cover the replacement parts.

6 Great Colour Options to Choose From!

Extreme Rebuild Colours

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Extreme Rebuild of GM 6L80E 6 Speed Automatic (includes Torque Converter) Extreme Rebuild of GM 6L80E 6 Speed Automatic (includes Torque Converter)
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Whats the difference between the extreme and nomad valve bodies? Do i need to hve the gearbox tuned again after refitment to car? Whats is the total price with either valve body minus the exchange transmission Dominic Booth asked on December 20, 2025

We have both the Heavy Duty “Nomad” and “Extreme” Valve Body assemblies. Either valve body will make a noticeable difference to the way the car drives.The Nomad and Extreme valve bodies are slightly different. They are both Heavy Duty assemblies, both can handle a substantial power increase and both have far greater towing capabilities. The Nomad is a slightly firmer and instant shift over the factory fitted standard units while the Extreme is simply firmer again. The only difference between the Nomad and Extreme valve bodies is the firmness of the shift.

No, you will not need to have the transmission tuned after fitting either type of valve body. For a 6L80E we can only upgrade the valve body during a rebuild.

Stephen Cosstick answered on February 3, 2026 store manager
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