Adapter Ring for Transmission Pump Assembly to Engine Connection

A powertrain comprising:

• a transmission having a casing;
• a torque converter operatively connectable to the transmission;
• a pump assembly including a transmission pump and a bell housing;
• wherein the bell housing is adapted to mount to the transmission casing and the pump is adapted to operatively connect to the torque converter;
• an engine having an engine mounting face;
• and
• an annular pump assembly adapter ring having a pump-side mounting face adapted to mount to the bell housing and an engine-side mounting face adapted to mount to the engine mounting face, thereby connecting the pump assembly with the engine.

A method of assembling a powertrain comprising:

• maintaining an inventory of transmissions of a first type each connected with a respective transmission pump assembly of a first type;
• and
• mounting an adapter ring to the pump assembly of a first of the transmissions in the inventory;
• wherein the adapter ring is configured with a predetermined engine mounting bolt pattern adapted for connection with a first type of engine.