F350 Super Duty vs 3500 Denali vs The Ike Pulling 30k lbs

4x4ord wrote:
I've been screwing around with the numbers and I think the Duramax time was not really that far off what should have been expected based on a 39000 lb truck and trailer and 2220 ft of elevation gain climbing the hill. Based on those same numbers the Ram should climb the hill in about 12 minutes. The thing that doesn't add up is that the Ford should not have been able to climb the hill in 6 minutes and 20 seconds running at the rpm it ran at unless it is putting out more power than Ford claims.

4x4ord, I'm curious what your calculation shows, if we pretend the L5P has a bigger turbo that does not lose hp at elevation. According to GM's graph, the engine is suppose to climb from 380 to 445hp from 2300 to 2800 rpm:



We know the high elevation dyno flattens out at 320 rwhp from 2300 - 2800 rpm. Assuming it climbs 55hp (account for drivetrain loss), so that it dynos 375 rwhp @ 2600 - 2800 rpm. What time would that turn out?