Cummins swaps.....Who has done them? Need some advice

[Tutt]

i finished one about a year ago.

im not real good at taking pics, but here is a link to what i did take.
http://s513.photobucket.com/user/jos.../library/Dooly

it was a ton of work....but very worth it.

i answered what i can below...

Originally Posted by

1. What is the difference in the 1st & 2nd Gen 12 valve Cummins engines?

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on the engine itself, the injection pump is the biggest difference[/COLOR]

2. Which would be a better choice?
2nd gen (p-pump) makes more power. 1st gens are said to get better mileage. the mileage is probably debatable. there is no doubt that a p-pump will make power easier. the radiator and intercooler from a 1st gen will swap over easy (what i used). i think the 2nd gen stuff is wider and may not fit as easy.

3. Which manual transmission would be the easiest to swap in. I would love a Manual tranny but would think a little more work would be required (clutch pedal, clutch master cylinder, etc.).

4. If I were to use an auto tranny what would be my best option with simplicity and dependability in mind.
47rh is the go-to. they came in 94-95. the are hydraulically controlled except for OD and lock up. i am controlling them with switches right now. up thru 93 they did not have a lock up converter. 96 and on is electronically controlled.

5. Are body lifts usually required for firewall or tranny clearance (depending on tranny)?
no with a 47rh. it is tight though. my truck is 2wd and lowered. manual trans might require a bolt in hump.

6. Can I utilize my factory radiator support and radiator? Or are mods definatley necessary in this area?
i used the 1st gen dodge radiator. i wanted to use stock hoses and use the radiator that was designed for the engine. the 1st gen radiator is very easy to mount and fits really well. i also used the 1st gen intercooler. this required some modification to the core support, but it wasn't too bad. people have used many many different radiator and intercooler combos.

7. Are there any prefab or factory built mounts or crossmembers for these types of conversions?
tn diesel conversions makes some mounts, but they are pretty expensive for what they are. i basically copied them. your situation is a little different with the 4x4.