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White Box 8HP70 Transmission Adapter Plate

Gen III Hemi Swap 8HP70 Transmission Adapter Plate for 1966-70 Mopar B-Body

PART# WB130024

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Fits 8HP70 Car Transmission Only (Transmissions that originally came in a car from the factory).


White Box transmission adapter is part of the most comprehensive line of GEN-3 Hemi swap components available for the Mopar B-Body. The WB130024 crossmember adapter plate allows the installation of the popular 8HP70 8-speed (car automatic transmission only) when used with the WB130021 Transmission Crossmember. The WB130024 Adapter Plate bolts directly to the OEM transmission mount location with the supplied hardware and eliminates the daunting task of figuring out correct drive line inclination and U-Joint operation angles. WB130024 transmission adapter plate is designed for use with GM style transmission mount for its compact design that allows for better ground clearance than the OEM crossmember (use w/ Hooker part # 71223029HKR or 71223030HKR - sold separately). Solid 3/16" Steel construction with raw steel finish.


  • Engineered Transmission Adapter Plates Works Together w/ White Box Transmission Crossmember & Engine Mounting Brackets, and Hooker Blackheart Long Tube headers & Exhaust Systems for an Easy Trouble Free Gen III Hemi Engine Swap on the Mopar B-Body
  • Accommodates Popular 8HP70 (Car Transmission Only) - Requires WB130021 Crossmember
  • Sets Driveline Inclination Angle to Approximately 2.0 - 2.5 Degrees with Proper U-Joint Operation Angle When Used with BHS531 Engine Mounting Brackets and V8 K-member
  • Uses Hooker Transmission Mount - Hooker Part # 71223029HKR or 71223030HKR (sold separately)
  • Accommodates up to 3” Exhaust
  • Raw Unpainted Finish Allows Easy Modifications & Great Value
  • Heavy Duty 3/16” Steel Construction
  • Includes Mounting Bolts to Attach to Transmission & Transmission Mount


Application1966-1970 Mopar B-Body
BrandWhite Box
Emission Code6
Motor TypeChrysler Gen III Hemi
Product TypeTransmission Mount
Type of ComponentAdapter
Part NumberWB130024



Vehicle emissions regulations are not applicable to this item.

Tech Resources

Fits 8HP70 Car Transmission Only (Transmissions that originally came in a car from the factory). Use with WB130021 Transmission Crossmember (sold separately) Requires 2-bolt GM style transmission mount (Hooker p/n: 71223029HKR or 71223030HKR sold separately). May require 1" shift linkage extension (shift linkage rod length varies) Some transmission tunnel massaging will be required (around shift linkage), minor trimming of unused nonstructural casting flash and tabs will be required to the transmission case. Shifter cable bracket may need to be fabricated. Output flange adapter and custom drive shaft are required.


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