View Cart “Billet Output Shaft 2001-2010” has been added to your cart.
Display Trans

Allison 750HP Transmission 1058 Converter



Product Description

WCFab Built Allison Transmissions are assembled in house in our climate controlled clean room. With six plus years of experience and hundreds of builds in use to date we have been able to tweak and perfect our builds to get the most out of the Allison to withstand the power that we are able to produce with the Duramax. Our standard build is rated for 750 HP and comes with a Suncoast 1058 Torque Converter (2000-2300 rpm Stall). For applications above 750 HP we recommend our Billet Package which includes several stronger internal components that are known to fail at extreme power levels. 

Our build starts with a complete disassemble of the transmission for inspection of all components. Then everything gets washed in our Industrial heated pressure wash machine.

When reassembly starts we use a custom Suncoast G-max Raybestos Clutch Kit, specifically made to our specifications. A Trans Go Shift Kit in the valve body, and a Rebuilt Pump with hydraulic upgrades to increase main line pressure for extreme clutch holding capabilities. We strengthen the known weak C2 snout with a custom machined support bushing and proper P1 Sun gear modifications. 

Every build receives New Torrington Bearings, New NSBU Switch (5 speed models), New Pressure Switch, New Valve Body Wire Harness, and New Valve Body Solenoids. A fresh Internal Filter with Billet Lock and a genuine Allison External Filter with new Magnet. Replacing the above components offers you peace of mind of a complete, freshly overhauled transmission, it’s LIKE NEW

Our Build is finally completed with a Semi-Gloss Black Professional Paint Job (Powder coating is available at an additional cost) and rounded off with a Genuine Allison Deep Transmission Pan and New Zinc Plated Hardware.

**Torque Converter, Our Labor & Workman Ship is Covered under a 3 Year Warranty from Invoice Date. We do offer an extended warranty increasing the warranty to a total of 5 years for an additional $495.00**


-1053, 1054, 1055, 1057, Converters no additional charge
-1074 Converter Add $195.00
-Mag Hytec Pan Add $195.00

-Billet Upgrade Package 2001-2010 $3,149.00

-Billet Upgrade Package 2011-2016 $2,595.00

-Powder Coat Transmission cases $450.00
-Additional 2 Yr. Extended Warranty Add $495.00

**Not included in price of Transmission** 

-Installation of transmission 

-Transmission Fluid

-Core Fee’s or Freight, if applicable (Must Be Installed by a Qualified Mechanic)


There are no reviews yet.

Be the first to review “Allison 750HP Transmission 1058 Converter”