HP vs altitude & gas vs diesel

rhagfo wrote:

Denny & Jami wrote:
The trailer we are pulling last time I weighed it was 15901lbs and yes I pulling it with a gasser and just like all motors it has power lose at altitude. Newer gas motors adjust to the higher elevations on the fly unlike older models. But you can't run diesel gears in them, you have to gear them so they run in their power band when pulling grades, but when we are running down the interstate I can still run in 6th gear at 2K rpm at 65 mph. My not sure about the other brands but Fords 6.2 with the 6 speed and 4.30 gears is a very capable pulling platform.

If you want to give your truck a test take hwy 191 south of 80 in Wyoming to Flaming Gorge Lake in Utah. On our last trip we were from sea level to 10K feet and it was a pleasure to drive.
The onlyh
Denny

So what gear and what speed are you running at say 5,000" pulling a hill with that rig.
Just wondering what the mileage is at, with those pulls.

Some just don't like the engine revving to 4,500 rpm, time to start pulling the feet back from the bell-housing.

I normally run it between 3200 and 4500 rpm on grades that need it, it will do 55 mph in 3rd no problem (and higher) on heavy grades. When we left our home base in Nebraska and headed west to Nevada by way of Utah to meet up with some rving friends before heading to Yuma by way of the North Rim of the Grand Canyon the truck averaged 8 but it was also still breaking in. After we came out of Mexico and headed to Texas and out of the big grades but still in the wind and rolling hills it averaged 9 by the time we got to the hill country. It took a while to figure out the power band and the manual shift mode on the transmission but after that it was fun to drive.

Denny