Thinking (read: fustrated at the moment) of getting rid of the 6.2l . Looking at a Cummings swap into 84 cucv truck. Anyone know if this would work? Not the little I-4 but the I-6 12 V.:eek:

Just an idea .......

It will work, read my signature and ask all the questions you want.:grd:

Would the th400 bolt up to the cummings, and would it handle the torque? I am sure it would need a adapter.


Give me the short version of the swap . Any hidden problems for the average wrench turner? Model numbers of the motors that will work?

c.r. I am curious what is wrong with your 6.2?

mangus580: Just a bunch of little things I suppose. The engine actually runs fine:). BUT, I must have a couple of oil leaks. First, the under body around the motor and trans. is oily and dirty. Trying to clean that off has been a chore (to determine where the leak is coming from). Second, I have an oily sludge in my radiator that I CANNOT get rid of. I am about to pull the radiator and have it vat cleaned. I am wondering if the block is pushing oil into the water. I have not been able to see evidence of water in the oil however. Thinking real hard of putting in a secondary oil and trans cooler and using the radiator just for engine cooling :confused: . Then its off to the military hack job wiring (They must have used the truck for something else after it was an ambulance ,and wired over top of the original stuff)that we have yet to completely figure out. All this, and I am doing it in the driveway with basic tools and its flippin hot outside :rant: . :lol: I love this stupid truck but this has been a very trying week.

Had a line on a cummings that came out of a dodge with only 30K on it and could get the motor pretty cheap.

Cummins! Cummins! Cummins! Come on! JJ ):h

c.r.

Your oil in the water could be coming from a leaking engine oil cooler. It is located inside of the passenger side radiator tank. Remove the oil cooler lines and pressurize the cooler.

As for swapping a cummins, let's just say it won't be cheap. Yes your turbo 400 will handle the engine, but without and overdrive you won't like it. A 12v cummins in only good to about 2500 rpms, you can make them go to 3000 but the engines don't like high rpms. You truck probably has 4.56 gears, it really won't like them, unless you are planning on running 37 inch tires and not driving over 65. There is a cummins adapter available for the turbo 400, it was used in a lot of bread trucks with the 4bt. I believe Jamie Avant has them for about 350.00. There will also be a lot of welding and fabrication involved, not for the weak at heart. I did mine in a little over a month (about 150 hours of labor) and then more time and money with broken parts. For what I gained, I should have left my 18:1 6.5 in the truck, it ran great, just didn't have the low end grunt of the cummins.