VIDEOWhat do you think? (other than graphic error at 18:35 that says GMC DENALI :) )For me, the time is about what I expected as it is missing a 10 speed auto and has slightly less power than the Ford.

Finally they run the exhaust brake in auto! Like have said multiple times, the Cummins exhaust brake is more powerful in auto downhill than in full if you are letting the truck do the shifting. If you are shifting yourself, then full mode is the way to go. Time up the hill did a little better than I expected. This truck needs more gears. Did they have tire chains on the tires? They mentioned it in the video, but I could not see them on any tires. I don't recall them mentioning tire chains on the other runs.So Ford won the uphill time while Ram won the brake applications and fuel economy. I still think they should do the test at 80F. I bet it would be a completely different outcome.

Didnt they point out at the begining that the computer was applying the brake lights and operating the truck and trailer wheel brakes? Which is how my Ford works. The time is very close to what I expected. A 10 speed would have done very little. The 10 speed in the Ford kept the truck at about 21-2200 rpm for most of the run. The Ram was revving about 2500 for most of the hill.

After seeing all three I would say the GM performed a little poorer than the math would predict. The Ram performed a few seconds better. The Ford has to be under rated when, at 2200 rpm it out pulled the other two trucks by the amount it out pulled them.

Chains? I don’t think so.Aren’t you limited to about 30 mph with chains.:):)

NRALIFR wrote:Chains? I don’t think so.Aren’t you limited to about 30 mph with chains.:):)Thanks! Did not know that. I live in Texas so chains are Greek to me. We care more about how something performs at 100F than 20F in the snow.

2020 Cummins IKE pull | Good Sam Community

131 Replies

ShinerBock
Explorer
Feb 20, 2020
Finally they run the exhaust brake in auto! Like have said multiple times, the Cummins exhaust brake is more powerful in auto downhill than in full if you are letting the truck do the shifting. If you are shifting yourself, then full mode is the way to go.

Time up the hill did a little better than I expected. This truck needs more gears. Did they have tire chains on the tires? They mentioned it in the video, but I could not see them on any tires. I don't recall them mentioning tire chains on the other runs.

So Ford won the uphill time while Ram won the brake applications and fuel economy. I still think they should do the test at 80F. I bet it would be a completely different outcome.

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2020 Cummins IKE pull

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