If you're boiling out transmission fluid that's the FIRST thing that needs to be addressed,, somethings wrong big time.
OK, Your truck, being a 2500, is already fairly heavy, then you add a 5K trailer and 1K in the bed,, you're probably already close to the GCWR, the combined weight of everything added together.
The 350 TBI in the 2500s is no powerhouse at all.
It has poor-breathing heads, low compression, and a mild cam.
Wasn't factory HP rating about 175>185, or so.
You're asking a small low HP engine to do a lot of work, especially going up-hill, trying to keep some speed.
All things put together, yeah, it'll suck gas like flushing a toilet.
Hey, the 350s have never been noted as a good mileage engine.
OK, Your truck, being a 2500, is already fairly heavy, then you add a 5K trailer and 1K in the bed,, you're probably already close to the GCWR, the combined weight of everything added together.
The 350 TBI in the 2500s is no powerhouse at all.
It has poor-breathing heads, low compression, and a mild cam.
Wasn't factory HP rating about 175>185, or so.
You're asking a small low HP engine to do a lot of work, especially going up-hill, trying to keep some speed.
All things put together, yeah, it'll suck gas like flushing a toilet.
Hey, the 350s have never been noted as a good mileage engine.