B&M Street/Strip Automatic Transmission - Buick, Oldsmobile, Pontiac TH400

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Part
B&M 112003

B&M Racing Street/Strip T400 Automatic transmission for Buick, Oldsmobile and Pontiac applications with large diameter bushing for use with large 1.875 inch Spicer yoke (part number 2-3-10431X.) This transmission is a complete ready to run unit (less converter) for high performance street and mild strip use. Since Chevrolet based T400 cores are getting harder to find, we've included a B&M Racing B.O.P./Chevy adapter plate so you can also use this transmission on 62 and later small block and big block Chevy engines. This transmission provides firm shifts and features a standard forward shift pattern. 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, kickdown solenoid and a recalibrated valve body. Transmission has a 4.00-inch tailshaft. Recommended max 600 HP and 550 Lb Ft.

  • Includes B&M B.O.P. Transmission to Chevy Engine Adapter
  • High Performance Street/Strip Applications
  • Fits Buick, Oldsmobile and Pontiac Engines
  • Recalibrated Valve Body and Chrome Pan
  • Over 65 Years of Proven B&M Quality
  • High Performance Friction Materials
  • New Intermediate Roller Clutch
More Information
PartB&M 112003
Manufacturer Part Number112003
UPC19695953300
BrandB&M
ColorBlack
Drive TypeRWD
Emission Code5
Horsepower Rating Hp600
Part TypeHigh Performance
Torque Rating Ft Lbs550
Transmission ModelTH400
Transmission Speeds3
Transmission TypeTH400
Typeproduct
Valve Body TypeAutomatic
Item ReturnsThis item can be returned

2WD/4WD2WD
Automotive Item GradeHigh Performance
Brake IncludedNo
BrandB&M
Built-In Transmission ShieldNo
California Proposition 65 Chemical NameBenzene
California Proposition 65 RequiredYes
Case MaterialCast Aluminum
ColorBlack
Control TypeHydraulic
Cooler includedNo
Core Change ApplicableNo
Dipstick includedNo
Drive TypeRWD
Emission Code5
Friction PlatesNew
Gear Ratio-First2.48
Gear Ratio-Second1.48
Gear Ratio-Third1.00
Horsepower Rating (HP)600
Manual Valve BodyNo
Output Spline Count32
Part TypeHigh Performance
Product TypeAutomatic Transmission Assembly
Reverse Gear Ratio2.00
Reverse PatternNo
Tailshaft Length (In)4
Torque Converter IncludedNo
Torque Rating (Ft/Lbs)550
TransbrakeNo
Transmission ModelTH400
Transmission Pan FinishChrome
Transmission Pan MaterialSteel
Transmission Pan TypeStamped
Transmission SeriesStreet/Strip
Transmission Speeds3
Transmission TypeTH400
Valve Body ConfigurationRecalibrated
Valve Body PatternForward
Valve Body TypeAutomatic
WarningCalifornia Proposition 65

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