Detroit 12.7 to 3406e swap

Has anyone done a engine swap in a 379 exhd from a detroit to a cat? Im wondering if they rear motor mount location will be in the same spot or will new holes have to be drilled into the frame? I know ac lines and coolant lines will change along with other plumbing stuff. Appreciate the input.

 

Ya pretty sure we're going to part ways. I'm going to finally get the 4912 cam put in and have Erich retune the truck and see how it does. I got the opportunity to drive a 379 like mine with a 550 cat and it ran down the road and pulled the load of cattle I was hauling so effortlessly I was really impressed.

 

I just feel I'm always into the Detroit so hard when loaded and just beating the piss out of it. Where as the cat I just cruised along and never had to work it as hard. Having that overall grunt from the cat was really nice and it just motored along.

I'll see what the cam and new tuning do for the truck and go from there. I'm ok giving up some mpg. Not like I get that great of mileage hauling a pot anyways.

 

No the detroit always served me well with what I had done to it. I think in my personal opinion that for hauling a cattle pot the cat suits me better and the detroit was awesome when I hauled flatbed. I do have some parts for sale in the classifieds that are off my motor if you guys are interested.