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you usually won't see diesels playing in the mud because for the serious mud runs you need alot of horsepower and diesels are known more for their torque not their horsepower. Also diesels do most of their work at lower RPMs and to get through mud you need to run some pretty high PRMs to keep the tires spining. So I would stick with a big block gasser for mud.
just my $.02
Oh and are you sure that F250 has a supercharger and not a turbocharger?
and I agree with JeremyH, only done mud once and will never go back...kinda fun but not worth the picture in my gallery
6.2 spinning 40's, what gears and how many people pray for it?
Diesels do have there good points in the mud. While a gasser has to be kept in the powerband or risk falling off and stalling (manual) a diesel can recoup with extra torque to return to the meat of the PB. Seen some big tires at a dead stop get moving agian because a diesel had some grunt to get it moving.
I have a 1994 F250 with the 7.3 Diesel. The problem I run into is the front end very heavy and sinks in the mud. I been places at farm in two were I cant get in with the Diesel.
If you plan on running any diesel with alot of throttle like that it is always a good idea to install an EGT(exhaust gas temp)guage since you will be spinning the turbo that fast with limited airflow. If you are seriously considering a swap and have that cash and ability I would rather have a gasser for mud, but if you have any trail running in the future i would stick with the oil burner. it all boils down to exactly what you intend to do with the truck
problem with a diesel is it is usually in a 4 door, long bed configuration. This is a mobility problem, and you'll have to weigh it yourself. A big-block gasser like the 460 isn't a whole lot lighter, therefore it makes little difference. If you run 14-16" wide tires, which a normal gasser would have trouble powering in the mud, hte diesel will sink less, due to the vast surface area. I run 35x16.5Rx12.50s on my 1993 F-350 IDI Turbo Diesel, and dont sink too much more than my friend's 1991 5.0L Bronco. Yes it sinks more, but no more than 4" under what his does, but I'd say my horsepower and torque is over his, and covers the difference of depth. He stalls out (even with an automatic tranny) in places I would never dream of my diesel stalling out, even though it is a manual (I've never stalled in the mud or rock-climbing, or engaging in any form of off-roading). I'd say diesel all the way, unless you want to turn sharper, to get into an area where you couldnt in a 18-21' truck (mines 23' due to the front and rear end bumper replacements), but if you do as I do, find a new way in to the same area. The main magic is in the height and width of tire you run on it.
Just figured I would let you guys know that the short box chevy on 40's I mentioned earlier Took 1rst place in our mud bog this weekend, int he 44" tire class.
he is running a 6.2 diesel, sm-465, 40" boggers, and 5.13's I believe.