Description
4R70W Level 4 designed for Ford Small Block engines using a 2-bolt starter & 4x4 applications with factory Ford Bronco Dana 20 transfer case. This will require the use of a standalone transmission controller unless this is going into a factory application. Our 4R70W's are designed to work with 1998-2003 wiring for standalone transmission controller
4R70W Level 3
Rated up to 500HP
Rated up to 400 FT-LBS
Converter: Custom built & custom stalled 13" lock up or 13" billet Yank Performance Converter
stall: 1800-2,200
Master Overhaul Kit with Hardened Steels
Raybestos Stage I Frictions
High Performance Valve Body Reprogramming Kit
New electronics – includes updated EPC, Shift Solenoids, Lock Up Solenoid,
Internal Wiring Harness, Output Sensors
Filter
Complete Torrington Bearing Kit
New Bushing Kit
New Reverse Band
Alto Red Eagle Wide O.D. Band
High Capacity 4 Plate Intermediate Clutch
Direct Clutch Pack (8 Frictions)
Rev. Drum w/ Heavy Duty Mechanical Diode
Updated Sun Shell and Gear
New Low Spring and Roller
High-Capacity Pump Assembly
Updated O.D. Servo Pin and Piston
Updated 3rd Accumulator Piston
Advanced adapter 4R70W to Dana 20 transfer case adapter installed
Custom 360-degree Adjustable Shift Linkage Arm
New OE Pan
| Gear Ratios | 1st | 2nd | 3rd | 4th |
| Ford 4R70W | 2.840 | 1.550 | 1.000 | 0.700 |
This transmission assembly is 26-1/2" overall in length is 1.750" longer than the early Bronco drivetrain assemblies.
The original V8 drivetrain assembly is normally 24.750"" and there will only be approximately
1-3/4" of a difference. The U-shaped shifter pattern used on the later model Bronco transfer cases may not
be compatible with this adapter housing. You will need to either modify the mounting or change to the earlier
model shifter pattern that had a straight design. This requires new shift rails to be install in the transfer case.
2. The crossmember support that we have provided on the bottom of the new adapter housing is very similar
to the original support bracket. It may be necessary to modify the donuts and bolts in order to assemble the
existing crossmember to the new adapter housing.
This kit has been designed to retain the stock Bronco rubber T/C mounts. These mounts were previously
equipped with a 1/2" bolt. Our casting has been drilled and tapped for a 7/16" bolt. We have supplied this kit
with the necessary sleeves, washers, and bolts to properly secure this adapter.
