What does all this MEAN? TV help.

Slow is no fun and certainly not economical for you since you must have your RPMs up even to get to the speed you did. If you are set on a gas engine, you probably need to get a 4.10 or 4.30 rear with any gas engine truck you buy. When we bought our first FW, we had a Chevy 3/4 ton with an old 350 engine. When we hooked up our Eagle 215SD and our boat, a Bayliner Capri 19 footer, the milage was very bad. Last trip we averaged 5.3 mpg for the trip, and out here in Wyoming, it's a long ways, sometimes between gas stations. After that trip, we bought a GM 454 and then a 454 Vortex and the mileage was about 8 mpg pulling our "train' and around 10 in town. Never took it out of town not towing so don't have any idea about highway unloaded mileage. After a while, we bought a GMC D/A combo and pulling our train we got around 12 mpg pulling in the mountains of Wyoming and14 in town unloaded. Very big improvement in mileage. Biggest improvement was the towing power. When going up the passes with the 454, we struggled to maintain speed at around 35-45 all the way up. With the D/A combo, we could still be gaining speed at the crest of the pass. It was a nice way to travel with our train. I am not going to tell you to get a diesel, I'm just pointing out the differences that I noticed. If you think that you might be going bigger with your trailer in the future, perhaps a look at a diesel truck might be warranted, for the future, at least.