Chevrolet TH400 3-speed automatic transmission.
TH400 Level 4
Rated up to: 1200 HP at the crankshaft
Rated up to: 1000 Ft-Lbs torque at the crankshaft
Custom Built & Custom Stalled 10" or 11" Billet Yank Performance Converter
Stall Range: 2600–4000 RPM
Master Overhaul Kit with New Steels
Raybestos Stage 1 Racing Frictions
New Kevlar Front Band
New Borg-Warner Low-Reverse Band (Heavy Duty Lugs)
Extra Capacity Intermediate Clutch Assembly
High Capacity Direct 9-Clutch Drum
Transgo Competition Valve Body Recalibration
Gearstar Full Race Shift Kit
High-Rev Spring Kit
300M Billet Forward Clutch Hub
300M Hardened Input Shaft & Reinforced Forward Drum
300M Main Shaft
34 Element Intermediate Sprag with Hardened Race
High Volume / High Flow Pump Assembly
New Hardened Pump Gears
High Flow Filter
New External Transmission Cooler
New Torrington Bearing Kit
Bushing Kit with Flanged No Walk-Out Case Bushing
Thrust Washer Kit
New Low-Reverse Spring & Roller
New Kickdown Solenoid
Adjustable Modulator
New Aluminum Transmission Pan with Drain Plug
New Transmission Mount
New Torque Converter Dust Cover
Bellhousing Hardware
Torque Converter Hardware
New Speedometer Drive Gear
New Speedometer Driven Gear
Chevrolet & BOPC Case Options 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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