BM 112004 Prerunner/Trail Transmission, 2WD TH-400 Manual Valve Body for GM Small Block and Big Block

SKU: 112004
Fits 2WD/RWD Manual valve body GM SB/BB applications. Use with large 1.875 Spicer yoke for 2 wheel drive models.Has 4 inch tailshaft and 7 inch separation on top bellhousing bolts. Transmission shipped without speedometer driven gear or housing.
Price: $2,038.95

To place an order, please call B&M Sales at 707-544-4761

Flat rate shipping of $150.00 applies within Continental U.S.
Regular shipping rate applies to all other destination

The B&M TH-400 PreRunner/Trail automatic transmission is for RWD GM SB/BB applications. This transmission features a large diameter bushing for use with a large diameter yoke (1-7/8 in.) and a deep cast aluminum pan. This transmission also features a manual/forward valve body with a 2.48:1 first gear ratio, 1.48:1 second gear. Internal components include rebuilt front pump, 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 and silencer ring. Max 600 HP / 550 Ft/Lbs. Intended for off road/trail use.

  • Manual/Forward Valve Body
  • Includes Deep Aluminum Pan
  • Intended for Off-Road Use
  • Rated to 600HP and 550 FT/LBS
Transmission SeriesPrerunner/TrailTransmission ModelTH400
Tailshaft Length (In)4Torque Converter IncludedNo
Transmission Speeds3Valve Body ConfigurationRecalibrated
Valve Body PatternForwardValve Body TypeManual
Transmission Pan TypeDeep, CastTransmission Pan MaterialAluminum
Transmission Pan FinishNaturalHorsepower Rating (HP)600
Torque Rating (Ft/Lbs)550Dipstick includedNo
Cooler includedNoDrive TypeRWD
Intermediate & Low Roller ClutchesNewFriction PlatesNew
Package ContentsTransmission
 California Proposition 65 Information

WARNING: This product can expose you to chemicals including Lead, Chromium (hexavalent compounds) and Benzene which are known to the State of California to ancer, cause birth defects, or other reproductive harm (For more information go to


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