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B&M Street/Strip Automatic Transmission - Chevrolet TH400

1965-1991 Chevrolet Small Block and Big Block 2-Wheel Drive, Automatic Shift Valve Body.

Part # 112002 Be the first to write a review
Estimated shipping date: 12/31/2021
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This GM TH-400 is our B&M Street/Strip automatic transmission (for Chevrolet applications) with a large diameter bushing for use with large diameter yoke (1-7/8 inch) Spicer yoke part number 2-3-10431X) 600 HP maximum. Legendary B&M transmission for street use B&M's Street/Strip transmission is a complete ready to run unit (less converter) for high performance street and mild strip use. The transmission provides firm shifts and features a standard shift pattern, these are the finest available for street and strip use. Includes a 2.48:1 first gear ratio, 1.48:1 second gear, rebuilt front pump utilizes B&M pressure regulator spring and shims, all new B&M high performance friction plates, new intermediate roller clutch, new kickdown band with welded anchors, machined center support with new case saver ring, all new thrust bearings and races, new adjustable modulator and silencer ring, new external electric connector and kickdown solenoid and a re-calibrated valve body. Max 600 HP / 550 Ft/Lbs.


  • Includes New Adjustable Modulator
  • Performance Friction Materials
  • High Performance B&M Quality
  • Recalibrated Valve Body
  • Legendary Performance
  • Forward Shift Pattern

About B&M

B&M Performance & Off-Road has been at the vanguard of the growing automotive aftermarket since the early 1950s. Specializing in performance automatic transmissions and transmission components, B&M will help you put the power to the ground.

Automotive Item GradeHigh Performance
Brand B&M
Built-In Transmission ShieldNo
Case MaterialCast Aluminum
Control TypeHydraulic
Cooler includedNo
Core Change ApplicableNo
Dipstick includedNo
DisclaimerTransmission shipped without speedometer driven gear or housing
Drive TypeRWD
Emission Code5
Friction PlatesNew
Gear Ratio-First2.48
Gear Ratio-Second1.48
Gear Ratio-Third1.00
Horsepower Rating (HP)600
Part TypeHigh Performance
Product TypeTransmission
Reverse Gear Ratio2.00
Sprag16 Element
Torque Converter IncludedNo
Torque Rating (Ft/Lbs)550
Transmission ModelTH400
Transmission SeriesStreet/Strip
Transmission Speeds3
Transmission TypeAutomatic
Valve Body PatternForward
Valve Body TypeAutomatic
California Proposition 65 Chemical NameBenzene
Chromium (hexavalent compounds)
Part Number112002

This part is legal for sale or use on Emissions Controlled Vehicles, Uncontrolled (Non-Emissions Controlled) Vehicles, and Racing Use Only Vehicles because it does not affect vehicle emissions and is not covered by emissions regulations.

For use with large 1.875 spicer yoke on 2 wheel drive models. Has 4.00-inch tailshaft and 7.00-inch separation on top bellhousing bolts. Transmission shipped without speedometer driven gear or housing.

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