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AMD Transmission Tunnel Perimeter Frame Dodge | Plymouth B-Body 1966-1970
$949.99
Gen3 Hemi swaps are becoming more popular and with the swap, comes the desire to run late model overdrive automatic transmissions. The perimeter frame replaces the factory restrictive floor/transmission hump and adds the structure needed when removing the center of the factory torsion bar cross member and makes room for larger automatic and overdrive transmissions. This has been tested to fit with the Chrysler NAG1 5 speed, HP70 8 speed, GM 4760 & 4L80 and the Tremec Magnum 6 speed manual. Other transmission will fit, please call with your transmission dimensions and we will help. The perimeter frame is laser cut and CNC bent to follow the contour of the factory floor and includes a laser cut and CNC bent top cover.

Made from 12ga Steel, 3/16 steel and an 18ga top cover the USCT Motorsports Transmission Tunnel Perimeter Frame requires substantial cutting, welding and grinding to install. A fully illustrated instructional manual is included and available for download on our main web site.

Fitments :
  • Plymouth GTX 1967-1970
  • Dodge Charger 1966-1970
  • Dodge Coronet 1966-1970
  • Plymouth Belvedere 1966-1970
  • Plymouth Satellite 1966-1970
  • Dodge Super Bee 1968-1970
  • Plymouth Road Runner 1968-1970


Notes :
  • You MUST install a USCT Motorsports Level 1 Chassis stiffening kit (frame connectors and torque boxes) before installing the Transmission Tunnel Perimeter Frame. The frame connectors and torque boxes tie the factory unibody together and work with the Perimeter Frame to make your car strong and safe when removing the OEM factory torsion bar cross member center for transmission clearance.
  • Requires a Cross member (not included) for your specific transmission. We have them for the 727, 518, NAG1, HP70, T56 Magnum and a universal cross member, call for other applications, we will help you out.
Proposition 65

WARNING: Cancer and Reproductive Harm
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Vehicle Make/Model
Dodge Charger 1966-1970 Base
Dodge Charger 1967-1970 R/T
Dodge Charger 1969-1970 500
Dodge Charger 1969 SE
Dodge Charger 1969 Daytona
Dodge Coronet 1966-1970 Deluxe
Dodge Coronet 1966-1970 Base
Dodge Coronet 1966-1970 440
Dodge Coronet 1966-1970 500
Dodge Coronet 1967-1970 R/T
Dodge Coronet 1968-1970 Super Bee
Plymouth GTX 1967-1970 Base
Plymouth Road Runner 1968-1970 Base
Plymouth Satellite 1970 Base
Plymouth Satellite 1970 Sport

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