Chevrolet TH400 3-speed automatic transmission.
TH400 Level 3
Rated up to: 800 HP at the crankshaft
Rated up to: 750 Ft-Lbs. of torque at the crankshaft
Custom Built & Custom Stalled 10" or 11" Billet Yank Performance Converter
Stall: 2600–3600
Master Overhaul Kit with New Steels
Raybestos Stage 1 Racing Frictions
Transgo Re-Programming Kit with Shift Command
High Capacity Direct 8-Clutch Drum
34 Element Intermediate Sprag with Hardened Race
Heavy Duty Forward Clutch Hub
New Front Band
New Borg-Warner Low-Reverse Band with Heavy Duty Lugs
New Low-Reverse Spring and Roller
New Torrington Bearing Kit
Bushing Kit with Flanged No Walk-Out Case Bushing
Thrust Washer Kit
High Volume and High Flow Pump Assembly
New Pump Gears
High Flow Filter
New Kickdown Solenoid
Adjustable Modulator
New Aluminum Transmission Pan with Drain Plug
New Transmission Mount
New External Transmission Cooler
New Torque Converter Dust Cover
New Speedometer Drive Gear
New Speedometer Driven Gear
Bellhousing Hardware
Torque Converter Hardware
Chevrolet and BOPC cases are available
| Gear Ratios | 1st | 2nd | 3rd |
| TH400 | 2.480 | 1.480 | 1.000 |
| Dimensions |
| Measurements are taken from the mounting surface where the trans meets the engine block to the tip of the tailshaft |
| Total Length: 28″ with 4″ Tail Housing 2WD Only |
| Total Length: 31″ with 9″ Tail Housing |
| Distance to trans mount center: 27″ |
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