Curiosity caught the Cheshire cat

[ACZL]

Went past a Ford dealer couple weeks ago and noticed he had 2 SD dallies on the lot. Stopped by the following week to take a gander at them. 1 was a 450 Lariat and the other a 350 XLT. 79 and 70K respectively. Anyways, didn't spend a whole lotta time there, but on the 350 (very well equipped), it was a '21, 4.10 gears and had the 10 speed tranny. So it got me to thinking and perhaps a little drooling too, but what is the RPM difference between a 4.10 6 speed and 4.10 10 speed at 60-70 mph? On my '17 350 w/ the 4.10 6 spd, I'm at 2100 at 70 mph.

[ACZL]

monkey44 wrote:
HA, you all think walking onto a dealer lot becomes scary, try walking into a chocolate fudge factory.

ROFLMAO on that one !!! OMG that's a good one! Yes it was auto correct and I never thought to proof read it before posting thinking all was okay. My bad.

FTG,

I know that could get me into trouble, but mama's vehicle would be the most likely one to get replaced despite it also being a '17 and that is if she wants to get another new one. I'm looking at tossing in the towel in 6 years and she a bit more, so in a sense gotta start watching the pennies along w/ the waistline if walking to the fudge factory.

M

[Hannibal]

kellem wrote:
Word on the street is Fords new 10spd is allowing truck buyers to tow happily with 3.55 gears instead of 4.30.....tight gear spacing.

I fell victim to the 10spd and 7.3, ouch.

Me too. Love the new truck with 7.3L, 10spd, 3.55.

[gotsmart]

monkey44 wrote:
HA, you all think walking onto a dealer lot becomes scary, try walking into a chocolate fudge factory.

stay out of the room where they pack the fudge. :E

[kellem]

Word on the street is Fords new 10spd is allowing truck buyers to tow happily with 3.55 gears instead of 4.30.....tight gear spacing.

I fell victim to the 10spd and 7.3, ouch.

[monkey44]

HA, you all think walking onto a dealer lot becomes scary, try walking into a chocolate fudge factory.

[ford_truck_guy]

Mike..

Driving onto a dealers lot is BAD.. BAD.. BAD... That move could turn out to be very costly .... Trust me, I know ! :B

Joe

[2oldman]

Boomerweps wrote:

IDman wrote:
I'm curious too. What is a dallie?

I suspect an auto spell corrected DUALIE.

My auto correct has also displayed words that don't exist. And it's dually.

[ShinerBock]

MFL wrote:
Good info Shiner, tire size guess, no problem!

Jerry

I just went off average tire sizes for the past F350/450's. It appears I was very close after looking it up. The new F450 has 225/70R19.5 which is 31.9 inch in diameter.

[monkey44]

Too funny - four out of six responses tell us what he meant, but does not speak to his comment.

From personal driving experience, without the engineering data. We went from a four speed tranny and 3:73RE to a six speed tranny and a 4:10 RE. Did not notice a significant difference in actual 'feel', and the power and mileage seemed very similar. I still got 15-17 mpg empty, and 12-14 hauling. Climbing hills hauling was the greatest 'feel different' as the 4s x 3:73 was less power, while the 6s x 4:10 pulls really well.

But the 6s x 4:10 was ten years newer, so advances in technology besides the gear ratio makes a difference too. If I had a choice, I'd go with the 6s x 4:10 again without a second thought.

I know, not the 6s vs 10s tranny, but still a change in gearing and a result from it.

[ReneeG]

BurbMan wrote:

IDman wrote:
I'm curious too. What is a dallie?

I think he meant Duallie

I knew what he meant . . . 😉

[Boomerweps]

IDman wrote:
I'm curious too. What is a dallie?

I suspect an auto spell corrected DUALIE.

[BurbMan]

IDman wrote:
I'm curious too. What is a dallie?

I think he meant Duallie

[IDman]

I'm curious too. What is a dallie?

[MFL]

Good info Shiner, tire size guess, no problem!

Jerry

[ShinerBock]

10th gear in the 10R140 is .632:1 and 6th gear in the 6R140 is .674:1. That is a 126 rpm difference at 70 with 32 inch tires putting the 10R140 at 1,905 rpm and the 6R140 at 2031 rpm in their final gear. I am not sure what the size the F350/450 tires are so that is just guess.