🔥 Twisted Street™ AOD to Dana 20 4x4 Conversion Package

1966–1977 Early Bronco • C4 & Manual-to-AOD Conversion • Up to 450 HP

Ford AOD • Bronco Dana 20 • Rated Up To 450 HP / 425+ Ft-Lbs at the Crank

Built for Early Bronco owners converting from a C4 automatic or manual transmission to a four-speed AOD overdrive while retaining the Bronco Dana 20 transfer case.

Includes the Twisted Street™ AOD transmission, stock-stall torque converter, Advance Adapters Dana 20 conversion and AOD installation parts.

🔧 TWISTED STREET™ AOD INTERNAL BUILD

⚙️ Clutches & Bands

• Twisted Torque™ HD Clutches & Steels

• Upgraded Direct Clutch Pack

• Upgraded Reverse Clutch Pack

• Performance Overdrive Band

• Upgraded Overdrive Servo

• New Intermediate Roller Clutch

• Clutch Clearances Set & Verified

• Band Clearance Set & Verified

🔩 Drums, Shafts & Geartrain

• Forward Drum Inspected

• Direct Drum Inspected

• Factory AOD Direct-Drive Shaft Arrangement Inspected

• Planetary Gearsets Inspected

• Sun Gears Inspected

• New Bushings

• Torrington Bearings Replaced as Required

• Thrust Washers Replaced as Required

• Endplay Set & Verified

🛠 Seals & Gaskets

• New Pump Seal

• New Clutch Piston Seals

• New Sealing Rings

• New Valve Body Gaskets

• New Case Gaskets

• New Filter

🔧 Pump

• Pump Disassembled & Inspected

• Pump Gears Inspected

• Pump Gear Clearance Checked

• Pump Pocket Clearance Checked

• New Pump Bushing

• Pressure Regulator Valve & Bore Inspected

• Lubrication Passages Inspected

• Line Pressure Checked & Set

🔧 Valve Body & Governor

• Valve Body Disassembled & Cleaned

• TransGo Level 1 / SK AOD Shift Kit

• Separator Plate Inspected

• Throttle Valve / TV Circuit Inspected & Set

• Governor Inspected

• Governor Valves Checked for Free Movement

• Valve Body Bores Inspected for Wear

• Street Shift Calibration

🔩 TORQUE CONVERTER — INCLUDED

• 12" AOD Torque Converter

• Stock Stall: 1650–1800 RPM

• Factory AOD Direct-Drive Operation Retained

• Balanced & Pressure Tested

🔩 ADVANCE ADAPTERS AOD → BRONCO DANA 20 CONVERSION

The Dana 20 conversion is installed on the transmission before shipment.

Advance Adapters Conversion Includes

• 6" AOD-to-Bronco Dana 20 Adapter Housing

• AOD Dana 20 Output Shaft

• Dana 20 Spud Shaft

• Dana 20 Bearing Retainer

• Bearing

• Snap Ring

• Gasket

• Seal

• O-Ring

• Adapter Hardware

Designed for the 1966–1977 Early Bronco Dana 20 transfer case.

Your Dana 20 bolts to the completed adapter assembly.

🔄 C4 → AOD CONVERSION

For Early Broncos currently equipped with the C4 automatic, this package replaces the three-speed C4 with a four-speed AOD automatic overdrive while retaining the Dana 20.

Installation requires:

• Crossmember Relocation / Modification

• Driveshaft Length Verification & Modification as Required

• AOD TV Cable Installation & Adjustment

• Dana 20 Shifter Linkage Adjustment as Required

• Transmission Cooler Installation / Verification

🔄 MANUAL → AOD CONVERSION

This package can also be used to convert an Early Bronco from a manual transmission to AOD automatic overdrive while retaining the Dana 20.

Manual-to-AOD swaps may also require:

• Automatic Brake Pedal / Pedal Changes

• Automatic Shifter & Linkage

• Flexplate Matched to Engine Balance

• AOD TV Cable & Correct Throttle Geometry

• Transmission Cooler & Cooler Lines

• Crossmember Relocation / Modification

• Driveshaft Length Changes

• Neutral Safety / Reverse Light Wiring

📦 AOD INSTALLATION PARTS INCLUDED

• Throttle Valve (TV) Cable System

• TV Cable Bracket & Return Spring

• Carburetor or EFI Throttle Linkage Adapter

• Spacer Plate

• Transmission Dipstick & Tube

• Torque Converter Hardware

• Flexplate — Engine Year & Balance Required

• Neutral Safety / Reverse Light Switch

Proper TV cable geometry and adjustment are required for AOD operation.

🔩 DANA 20 SHIFTER FITMENT (Shifter Not Included)

1966–1972 T-Shift

The factory T-style Dana 20 shifter is the easiest factory shifter setup for the conversion. Linkage adjustment may be required.

1973–1977 J-Shift

The factory J-style Dana 20 shifter can be used, but linkage modification or fabrication may be required for clearance with the AOD and adapter.

A twin-stick Dana 20 shifter may also be used where additional linkage clearance is needed.

🚗 ENGINE APPLICATIONS

• Ford 289

• Ford 302 / 5.0L

• Ford 351W / 5.8L

📌 INTENDED USE

✔ Up To 450 HP / 425+ Ft-Lbs

✔ Early Bronco C4-to-AOD Conversions

✔ Early Bronco Manual-to-AOD Conversions

✔ Dana 20 Transfer Case Retention

✔ Stock & Mild Small-Block Ford Engines

✔ Naturally Aspirated Applications

✔ Street & Cruiser Applications

✔ Weekend Trail Use

✔ Highway-Cruising Broncos

⚠ INSTALLATION NOTES

• Crossmember Relocation / Modification Required

• Driveshaft Lengths Must Be Checked

• Dana 20 Shifter Linkage May Require Modification

• Proper Transmission Cooling Required

• Proper TV Cable Geometry & Adjustment Required

• Manual-to-AOD Swaps Require Additional Vehicle-Side Automatic Conversion Parts

🇺🇸 BUILT BY TWISTED TORQUE™

• Transmission Completely Disassembled & Cleaned

• Clutch & Band Clearances Set & Verified

• Endplay Set & Verified

• Valve Body & Governor Checked

• Pump Clearances Checked

• Air Checked During Assembly

• Built In-House in the USA

Twisted Street™ — a 450 HP AOD overdrive conversion for 1966–1977 Early Broncos keeping the Dana 20 transfer case.