Hello jacanfora, welcome to the forum. The short story on the 1500, 2500, 3500 goes like this: 1500- 1/2 ton rating, 2500- 3/4 ton rating, 3500- 1 ton rating. Ford does the same thing using F150, F250, F350. Diesel vs. Gas- you'll likely get any number of responses for the pros and cons. Short version: Diesel will generally have more pulling power/torque and better fuel economy, can also have slightly greater upkeep cost, yet that will generally be offset by longer service life. Gas is generally cheaper on the initial vehicle cost, yet depending upon the miles driven and how hard you are on it, it will definitely burn much more fuel and could wear out in a much shorter period of time. There are lots of variables that could be considered between the two, I have just skimmed on some of them. I'm sure others will chime in on this, so stay tuned and consider all of the responses. Good luck and best regards, aevald
I think Allen has outlined this for you pretty good.
I'll just add a few things about gas and diesel. I currently have a 1997 350 diesel that I use to pull a trailer 25% of the time. This trailer is 14,000 gross and I usually haul 8-12,000. I can pull at highway speed and get 12-14 mpg. This mpg is low compared to the newer diesels that get up in the high teens mpg under a load. Before 2001, I had a 1992 250 with 351 gas. I also used that to pull a trailer in the 6-8,000 weight range. With that gas truck at highway speed I could get 8-10 mpg.
Gas versus Diesel is just based on what you plan to use the truck for. The diesel is $4-6k more to buy new, and the fuel is 10-15% more in today's market. It takes a lot of miles to make up that cost difference, but if you are going to haul loads with it on a regular basis diesel is the way to go. If you are going to use it to haul a few pieces of plywood once in a while, gas would be more economical.