Description
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.
Performance Specifications
- 4R70W Level 4
- Rated up to 600HP at the crankshaft
- Rated up to 500FT-LBS of torque at the crankshaft
- Converter: Custom built & custom stalled 10" multi disk lock up or 13" billet Yank Performance Converter
- Stall: 1800-2,600
Build Details
- Master Overhaul Kit with Hardened Steels
- Raybestos Stage 1 Racing Frictions
- High Performance Valve Body Reprogramming Kit
- New electronics – includes updated EPC, Shift Solenoids, Lock Up Solenoid, Internal Wiring Harness, Output Sensors
- High Flow Filter
- Complete Torrington Bearing Kit
- New Bushing Kit
- New Reverse Band
- Carbon Fiber Wide O.D. Band
- 300M Hardened Intermediate Shaft
- Heat treated and stress relieved input shaft
- High Capacity 4 Plate Intermediate Clutch
- Direct Clutch Pack (8 Frictions)
- Wide Rev. Drum w/Mechanical Diode
- Updated Sun Shell with Gear
- New Low Spring and Roller
- High Capacity Pump Assembly with New Gears
- 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: 2.840
- 2nd: 1.550
- 3rd: 1.000
- 4th: 0.700
Dimensions
- This transmission assembly is 26-1/2" overall in length and 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.
Notes
- 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 installed in the transfer case.
- 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.
