Ford 6R80 4WD to Dana 20 Transfer Case Adapter - Coyote Swap SKU: 8202

Early Bronco Dana 20 Transfer Case to Ford 6R80 Auto Transmission Adapter

Looking to add modern performance to your vintage Ford Bronco? This adapter kit allows you to bolt the Ford 6R80 6-speed automatic transmission directly to your Dana 20 transfer case—making it a top choice for Coyote 5.0L engine swaps in your 1966–77 Ford Bronco. With unmatched strength and smooth shifting, the 6R80 is one of the most capable transmissions Ford has ever produced—and this adapter brings it into the classic Bronco world with confidence.

Designed for the 4WD version of the 6R80, this adapter ensures perfect mating to your Bronco's Dana 20 transfer case, preserving low-range functionality while dramatically improving on-road drivability and off-road control.

• Fits 1966–77 Ford Bronco – Designed for use with the factory Dana 20 transfer case.

• For Use with 6R80 4WD Transmissions – Compatible with 6R80 units found behind Ford’s 3.7L V6 to 6.2L V8 (2009+).

• Coyote Swap Ready – A perfect companion to the popular 5.0L Coyote engine upgrade.

• Included Components – Comes with required adapter parts and a new pilot bushing.

• Strong and Compact – Makes use of the 6R80’s compact design and high torque rating for enhanced Bronco performance.

• No Transfer Case Mods Required – Bolts directly to your Dana 20 transfer case without modification.

Why put the 6R80 Automatic in my Early Bronco?

The 6R80 transmission is a modern, electronically controlled 6-speed automatic developed by Ford in partnership with ZF. Originally introduced in 2009 and built in Michigan, it features:

• Six forward gears for excellent off-road crawl and highway cruising.

• A stout 590 lb-ft torque rating, with capability far beyond that with tuning and aftermarket internals.

• Low 1st gear (4.17:1) and double overdrives (0.87:1 & 0.69:1) for towing and fuel economy.

• Band-free design using five clutch packs and a one-way clutch for smoother shifts and less complexity.

• Compact size and narrow oil pan for better fitment and front driveshaft clearance.

• 23.75” overall length and 31-spline 4WD output shaft.

What’s Included

• Adapter housing

• Hardware kit

• Custom pilot bushing

• Instructions for mating to Dana 20 transfer case and 4WD 6R80 transmission

Fitment Notes

• Designed only for use with 4WD 6R80 transmissions.

• Standalone transmission controllers are required for 2011+ 6R80 units (post-TCU removal).

Pair your 66-77 Ford Bronco Dana 20 transfer case with a Ford 6R80 6-speed automatic transmission and enjoy modern shifting performance in your classic Bronco.