Upgrading the Cummins Roller Clutch
When the Cummins diesel was offered in 1989 Dodge pickups, it could be purchased with either a manual transmission or a non-lockup 727 automatic transmission. The converter for the non-lockup 727 transmission was very similar to the 400 or AT540 converters and had many internal likenesses. The converter’s historic durability made it a good choice for this demanding application, but this converter also has some historic shortcomings.
