F350 struggling to pull trailer

[Strokin96]

I hauled my mud truck and atv's out to a mud event this weekend and the ol F350 Powerstroke could barly do 40-45 weather it was at 1/4 throttle or full throttle. What is going on with this thing? My 93' Dodge D250 Cummins would pull my mud truck and atv's plus trailer 85 mph like their was nothing back their.

[baddkarmaracing]

did it smoke alot? how much weight are we talking?

[azkcr]

There's more weight on there than you'd think.. And the 38's can't be helping you too much either though. lol

[ms8091]

You may need to re-gear the truck. With the big tires and that much weight, you may be overworking it.

[Strokin96]

Zero smoke. 4.10's. Probley about 11,000-12,000.

[charliesnyder]

I'm gonna have to agree with the two above me. Those 38's aren't meant for that truck with those gears. Regear or go to a better sized tire.

[ms8091]

I would say you definitely have a problem in the engine somewhere then. I am fairly new to diesels but maybe an injector problem, have you had it scanned yet?

[StarDriver]

How many rpms are you turning, I'm with the others, the big tires are killing you.

[azkcr]

It doesn't sound like an engine issue at all...
38" Swampers aren't the best tires to try to tow with. Those are the tires I expect
on the muddin' truck.. Not the towing truck..
If it was a newer truck with higher HP then MAYBE I would say that it should tow
faster than 50mph..
But with thousands of pounds, a '94 and 38's.. I'm gunna say nope..

[jethro]

especially a 94 with no mods other than an intake! 38's are a terrible tire for towing drop down to a 33 and it will tow a ton better keep the boggers for the mud truck not the duty rig