Adapter Kit – Cummins R2.8 to GM Manual Transmission “Shorty”


R2.8 GM adapter kit

Shortest possibility on the market


This adapter kit for the Cummins R2.8 is designed to mate any GM small-block Chevy (SBC) manual transmission directly to the engine.  This Quick Draw solution is the shortest on the market, measuring just 23″ from the face of the adapter to the front of the harmonic balancer pulley.  It is a great solution to bolt a Tremec T56 or TKO transmission to an R2.8. It’s also a gateway for mounting the compact Cummins R2.8 diesel in a smaller vehicle such as a Willys Jeep, or really any application that already has a GM bellhousing adapter.  Aside from the slimness of the adapter, our unique dual starter pocket and a slim timing cover provides a lot of flexibility in any application where space is at a premium.

Kit Includes:

  • Bolt-on aluminum dual starter pocket GM adapter plate, which replaces the factory Cummins plate
  • New crank seal
  • Dowel pins for engine and transmission
  • Bellhousing bolts
  • clutch kit bolts
  • Slim timing cover with gasket
  • Pre drilled flywheel for GM small block clutch kit
  • Pilot bearing insert

Additional information

Weight60 lbs
Dimensions20 × 20 × 5 in

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