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jimh406's avatar
jimh406
Explorer III
Nov 16, 2016

Remembered why I got a F450 with 4.30 gears ... observation.

During the past few days, I drove my daughter's families stuff up from El Paso in a 36 ft Penske truck. We were 23,400 according to the Cat Scale. We made it ... a little brutally slow at times. We chose the the pretty route up through NM, UT, ID, OR, and then WA.

A lot of it was nearly the same as we took earlier this year, but we were going as slow as 45 mph up some of the steep mountains. My DW made the comment that the mountains didn't seem so steep in our TC! Obviously we were slow down the mountains as well with not nearly as good as brakes as my F450 with the TC loaded.

I don't know what model engine it had, but it did have a regen mode. It also was an International chassis, so I guess some Navistar model. It was also a pretty bouncy ride and pretty loud compared to the plush F450 Lariat.

It was a strange feeling to be the guy who was going a mile or two mph faster up a hill to pass. A few times, I passed semis that were going probably 35 mph over the past few days, so I guess it could be worse. I did have to look way down the mountain to see if it was possible to attempt the pass. I pass whenever I want with the F450.

Any way, I'm really happy to have the best tool for the job of going up our mountains, and so happy with the choice!
  • That's exactly my point... comparing the F450 to a much heavier medium duty rental truck is also without merit. That's why I posted the just-as-silly comparison to the Pete 379 with the C15 in it.
    I could outrun that Penske truck in my old gas GMC with a camper on it.
  • burningman wrote:
    Sure a new F450 is a heck of a pickup but you're comparing it with a medium duty carrying lots more weight! Sorry to burst your bubble but if you want to compare apples to oranges, put that F450 up against an air ride Peterbilt with a C15 Caterpillar, 550 HP. I'm quite sure I could drag several F450s with campers behind it up the mountains and not even notice they were there. And thats with 3.50 gears and 24.5 tires.


    My truck, TC and trailer weigh almost 2 tons more than what JimH described. I feel your comparison is without merit.

    Buying my F450 was no small pill to swallow. I did a lot of reading, but I really took very seriously the advice/opinions that JimH, Bedlam, and NRALifr gave in various posts. All long-timers here, all well respected.
  • Jim, thanks for the travelog and equipment comparo. Recently i had to deal with a gearing change and further had to mitigate the weight vs. power/torque vs. gearing equation. Coming from 3.54:1 pigs, and adding 35" tires and heavier wheels to the mix, I had to explore optional gearing for my GEN II RAM, 2-series truck with an NV5600, 6 speed manual with a 27% overdrive. This led me to this fun page: http://www.grimmjeeper.com is the best gear ratio calculator on the net, and I used it to develop a regearing strategy.
    My two choices for a front Dana 60, and a rear Dana 80 were
    4.10:1, and 4.30:1, both of which would fit my cases. I chose the 4.10's because of the lower torque max of the Cummins (which runs best between 1700 and 2000 rpm, and that they are stronger than the 4:30's), vs. the higher rpm comfort of the Navistar V-8's.
    Ford certainly did their homework when developing gearing that would work in the specified power bands in their trucks for the most users.
    jefe
  • I heard the stories that rental trucks are detuned for reliability.
    Years ago I was using F450 with 7.3l/230 HP engine for pulling 15k trailer. When the differential blow, I rented F550 with 6l engine that is rated at 320 HP. After hooking my trailer I almost created accident as F550 with auto transmission would barely move the trailer at the intersection, where F450 with manual would move without a problem.
    Part of the problem might be auto v/s manual transmission, but I made topic on Ford Truck Forum and lot of member come with the story that rental companies detune the engines, as in rental truck we tend to brush redline more often than we do in our own.
  • I rented a Penske in September and my wife followed in our '16 Chevy 3500 pulling my boat. Penske experience was the same as you described but the AC didn't work through Arizona and Texas heat! The 3500 got 28 MPG because the Penske was so slow! Like you, we appreciate the TV even more after that experience.
  • Jim425
    I understand what you are saying. You really enjoy the power of your 450.
    We still have our 7.3 and still pull loads with it and I still enjoy driving it.
    But wow having all the power and comforts of our 6.7 is really nice. Puts a big smile on my face.
    I'm not saying it's the biggest most powerful truck on the road. I'm just saying it does all that I want and I understand Jim425 appreciating what his truck can do after driving another truck.
    I well remember having to use the turn out lanes to let the string of cars that were trapped behind me get by.
    That doesn't happen anymore and I am glad.
  • burningman, you are missing my point. The Penske truck did fine for what it does. However, there are also plenty of pickups that are as slow as the Penske with their TCs loaded. I'm just glad my 2010 F450, which isn't new, isn't one of them!
  • Sure a new F450 is a heck of a pickup but you're comparing it with a medium duty carrying lots more weight! Sorry to burst your bubble but if you want to compare apples to oranges, put that F450 up against an air ride Peterbilt with a C15 Caterpillar, 550 HP. I'm quite sure I could drag several F450s with campers behind it up the mountains and not even notice they were there. And thats with 3.50 gears and 24.5 tires.
  • I love my new truck... night and day over my previous 7.3L, and I thought when I bought that one I had the end-all-be-all of trucks.

    It was an absolute shock to me to have the cruise set the whole way going up Snoqualmie, fully loaded, and it didn't even act like it was breaking a sweat @ 27,000lbs.