Re: Can I replace 2000 E-350 Gas engine with a 2000 E-350 Diesel Engine?
I moved this to the proper section.
To answer your question:
Yes, and no. Yes, the diesel engine can work, but no, I don't think it would be worth your time or money. For $4-7K you can buy a still running and reliable E350 with the 7.3L diesel. To change out the gas engine to a diesel requires several things besides the engine: you'll also need the diesel transmission, wiring harness, computer, and a few other electrical goodies to make emissions work.
The major hidden item here is weight. The front axle weight rating will greatly reduce available payload as the van's that are built with a diesel in it are more purpose built. You'd have to adjust/change spring rates, install firmer shocks but that still won't legally increase the GVWR without proper inspection. If you don't plan to carry or tow anything, then weight won't be much of a concern. For a good diesel (7.3L is the only one to buy, especially on the used market or you'll have just as many problems with it as your current gas engine) and all the related parts and hardware, not counting labour I'd put it at close to $6K for the conversion. That also includes a new fuel tank, pump and related lines. Diesel pumps run a bit slower than gas fuel pumps, so simply cleaning out the tank and filling it with diesel won't work without causing more grief.
If you're serious about going diesel, I'd shop around for one that's already put together from the factory. It'll save you tons of grief, and will probably cost just as much to properly convert your gasser.
'00 Durango R/T 360ci 290hp (modded); 138,500m
'06 Pontiac G6 GT 3.5L 220hp; 44,000m
'12 Chrysler 200 Limited 3.6L 283hp; 13,000m
'99 Taurus 3.0L 2V Vulcan 145hp; 154,300m - Traded
Amsoil in all vehicles!