We are almost done with a 12V Cummins into a K2500 Suburban 4x4.
The Suburban is a 1996 GMC and was a 454 Vortec truck when we started. We used the original transmission 4L80E with a controller. We ended up putting a 1" body lift on to make life easier although it wasn't required.
This entire swap was done without discharging the Air Conditioning.
Most all of the swap parts were from Autoworldmt.com - they were great during this entire swap. They supplied the motor mounts, trans controller, A/C mount, alternator mount, transmission adapter and tachometer drive.
Transmission was move back 3" to accommodate the longer Cummins engine. We moved the transmission coolers to underneath the truck, we used the factory cooler and a cooler from Derale with a fan on it.
Here is the engine, it is from a 1993 Dodge:
Another engine shot:
This shows what we had to cut from the core support to use a 1994-1998 Dodge Truck Intercooler, we did end up cutting more than what is shown but not much:
Here the engine is sitting on the mounts in the truck:
Another in truck shot:
Here is a clearance picture with the stock IFS and the Cummins Oil Pan. It doesn't touch but it's close. We have to countersink a few of the bolts:
Originally we tried to use the stock dodge manifold but ran into clearance issues since this Suburban has dual heat and A/C:
We ended up using a 2003 Dodge Manifold which is a lower mount and cleared everything: