40 mph uphill? Other Armada or Titan TVs?
I’ve been trolling this site for a year. There’s so much info I that haven’t needed to ask a question until now! Tv: 2006 Armada LE 5.6L DOHC V8 with factory tow package. Tow rating 9000lbs. 305...
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1320Fastback wrote:
Completely normal for a unboosted gas engine at altitude. Just downshift to keep rpms up, watch your temps and let the big guys get the tickets and clear the way.
Engines without a turbocharger lose power at altitude. Turbos were invented to solve this very problem for aircraft engines. The higher you climb, the more power they lose. Folks who want to drag heavy loads around in the mountains are well advised to buy turbocharged tow vehicles.
For what it’s worth, I’ve dragged a trailer the same size/weight as yours with two different vehicles, a 2.8 liter Jeep 4 cylinder and a 3.0 liter BMW 6 cylinder but both are turbo diesels, and both had no trouble climbing the 6-7% slope on I-70 west of Denver from 5,000 feet to 11,000 feet. It was the turbo that did it. No loss of power from sea level to at least 11,000 feet. 188 hp/335 ft-lbs for the Jeep, 265 hp/425 ft-lbs for the bimmer. Both topped the mountain in the 60-65 mph range, and could have gone faster if I’d been crazy enough to want to.
