Gear ratio question
Cargo Master
Joined: Mar 2007
Posts: 2,856
Likes: 1,037
I tow with my 5.8/E4OD. I swapped from 3.55 to 4.10. I am happy with the results. I would love to have a transmission with many more gears. Looking into a 10sp swap, but they have to make the controller first.
Cargo Master
Joined: Mar 2007
Posts: 2,856
Likes: 1,037
Yup, adapters but Quick10 controller is not out yet. Suppose to be next month.
Then there is the question, do I want to be the first one to use it? Something tells me that I would rather have someone else to be the guinea pig.
Then there is the question, do I want to be the first one to use it? Something tells me that I would rather have someone else to be the guinea pig.
Lead Driver
Joined: Jan 2019
Posts: 5,083
Likes: 868
From: N.W. Alabama
Cargo Master
Joined: Mar 2007
Posts: 2,856
Likes: 1,037
Coming out of the closet is one thing, available for sale is another. The fine print says early 2025.
Without a doubt, I will be sitting down when I look at the price. I have priced out transmissions, they are substantially more than the 6 speeds.
Without a doubt, I will be sitting down when I look at the price. I have priced out transmissions, they are substantially more than the 6 speeds.
Logistics Pro
Joined: May 2022
Posts: 4,291
Likes: 2,416
From: Everywhere and nowhere
There is a 6% grade for 4 miles near my in-laws and my OBS 460/5spd with 4.10s can climb it at 45mph (speed limit) in 4th gear (1:1) but not 5th (.76:1) my 2022 7.3/10spd/4.30s will climb it at a lower RPM in 10th (.63:1) because it makes significantly more power to take advantage of the additional overdrive gears.
FTE Community Team
Joined: Jan 2019
Posts: 10,772
Likes: 1,511
I agree, if you seldom actually drive it a bunch and never tow except maybe the occasional boat, leave it be. It would be happier and a little more fun with 4:10's. Either way, I'd install a big auxiliary transmission cooler just for longevity in whatever you do with it. Transmission>auxiliary cooler>factory cooler>transmission.
Cargo Master
Joined: Mar 2007
Posts: 2,856
Likes: 1,037
I'm building a 408 and this should complement my Kenne-Bell supercharger. I really do not think I will run into power issues. Of course, I'm still waiting for the machine shop to get to it. He says the first of the year. Maybe a late Christmas present..
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Fleet Mechanic
Joined: May 2004
Posts: 1,436
Likes: 0
From: Montana
Just for the sake of future research.... F150's generally came with 3:55's standard. I have one that came with a 5.0 and 3:30 gears and its the dumbest thing ever. That being said, If you have 3:55 gears and 33 inch tires you actually have more like 3:27 gears(or whatever the math works out to be.). 4:10 gears will bring you back to stock(essentially) 3:55 drivability. You will have to go with 4.56 gears if you want more than stock performance with 33 inch tires.
Logistics Pro
Joined: May 2022
Posts: 4,291
Likes: 2,416
From: Everywhere and nowhere
Just for the sake of future research.... F150's generally came with 3:55's standard. I have one that came with a 5.0 and 3:30 gears and its the dumbest thing ever. That being said, If you have 3:55 gears and 33 inch tires you actually have more like 3:27 gears(or whatever the math works out to be.). 4:10 gears will bring you back to stock(essentially) 3:55 drivability. You will have to go with 4.56 gears if you want more than stock performance with 33 inch tires.
Lead Driver
Joined: Sep 2002
Posts: 9,554
Likes: 2,034
From: North Texas
Almost all of these had a 235/75R15 stock. That is a 29" tire. You forgot beyond height difference, you are increasing mass being larger and drag with a wider tire (basic physics). That is why if you have a stock or basically stock 302 or 351W and an auto, go to a 4.56:1. Manuals had a far shorter OD around 0.77:1
302s are undergeared stock. Best thing I did was dump that weenie 3.55:1 and did a 4.10:1 with my short tires. I cannot imagine how much of a slug a 3.55:1 302/auto would be on 33s.
302s are undergeared stock. Best thing I did was dump that weenie 3.55:1 and did a 4.10:1 with my short tires. I cannot imagine how much of a slug a 3.55:1 302/auto would be on 33s.
Laughing Gas
Joined: Jul 2009
Posts: 1,025
Likes: 412
From: NE Ohio
For a 5.8/E4OD F-150, the only factory gear ratios were 3.08 or 3.55s in either 4x2 or 4x4..
For a 5.8/E4OD F250 4x4, my buddy's truck with that combo came with 4.10s and 235/85-16s tires as stock (31.8"tall), but then again, it isn't a daily driver!
For a 5.8/E4OD F250 4x4, my buddy's truck with that combo came with 4.10s and 235/85-16s tires as stock (31.8"tall), but then again, it isn't a daily driver!
Hotshot
Joined: Jun 2015
Posts: 12,878
Likes: 2,446
