This pre-2002 Cummins engine adapter to GM transmission bellhousing adapter flexplate allows you to bolt your 2002 and earlier Cummins B-series engines, including a 4BT, to a GM automatic transmission. These transmissions include TH400, 700R4, 4L80E. Our adapter is precision CNC machined out of 6061 Aluminum with a 4140 alloy steel flexplate.
Our adapter positions the transmission straight, not angle-rotated, as do some bread truck adapters. This adapter kit requires the use of a Ford 6.4L or 6.0L Powerstroke starter. Some bellhousings will require additional interior clearance for the starter snout. In addition, some clearance modifications may be necessary to the engine block pan rail on the passenger’s side, as well as grinding of the starter mounting flange.
(This item will not work on some 4L60E transmission with removable bellhousings)