trans talk
Fleet Owner
Joined: Oct 2005
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From: Kentucky
Tuned
Joined: May 2008
Posts: 304
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From: Gladwin, MI
For the cost of a swap, I think you'd be money ahead putting four grand into the E4OD and getting a very stout transmission. If you have to have a six speed auto you could probably look into the 6L80E or 6L90E also. With the popularity of the LS platform, the previous 4L80E, and stand alone controllers being available, it might be a viable option.
The Novak Guide to the GM 6L80 Automatic Transmission
6L80E & 6L90E Transmission Controller
https://transmissioncenter.net/shop/...460-big-block/
The Novak Guide to the GM 6L80 Automatic Transmission
6L80E & 6L90E Transmission Controller
https://transmissioncenter.net/shop/...460-big-block/
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New User
Joined: Jun 2020
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thankyou for the good info,i ask this question because i did a short maintenance pull with my trailer on a short but very steep grade ,i thought that the weakness in my truck is not the 460 but the gear spacing in the e4od.iwent from 2500 in third gear to 3700 rpm when it downshifted into second,thats a hugh jump.so my reasoning is that a 6sd auto would minimize that somewhat while still keeping the engine in its powerband. fitting a later model auto isnt easy taking into account the controller,that is the reason for my question has anybody done this?
Fleet Owner
Joined: Oct 2005
Posts: 20,789
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From: Kentucky
The 6R80 in my 2006 Lincoln Navigator drops out of 6th straight to 4th gear whenever there is a slight incline and I am pulling my 14 foot cargo trailer. If the incline is more pronounced it drops to 3rd. It's a huge jump in RPM. A 6R80 behind a 7.5L engine may not drop down as many gears under the same conditions since my 5.4L 3-valve V8 makes power at the higher end.
It's a lot of money to swap in later model transmission. I would go the other way and put money into the engine. A set of Boport heads, headers and free flowing exhaust would be my first choice.
1996 F250 460 baseline dyno results and head porting-RESULTS ARE IN!
It's a lot of money to swap in later model transmission. I would go the other way and put money into the engine. A set of Boport heads, headers and free flowing exhaust would be my first choice.
1996 F250 460 baseline dyno results and head porting-RESULTS ARE IN!
Super Moderator
Joined: Apr 2004
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Usually a transmission swap is cheaper than an OD unit. In this case, I think a GV unit would at least be worth looking in to.
https://www.gearvendors.com/f2wd4s.html
https://www.gearvendors.com/f2wd4s.html
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More Turbo
Joined: Dec 2007
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From: Umicorn UtopiaFantasyLand
Usually a transmission swap is cheaper than an OD unit. In this case, I think a GV unit would at least be worth looking in to.
https://www.gearvendors.com/f2wd4s.html
https://www.gearvendors.com/f2wd4s.html
I have the Gear Vendor unit on my 96 F350 w/C6 4x4 std cab lb with 460 and I'm glad I have it and love it
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well look who has the real 6 speed with a 460 here, I guess. You cant use it in each gear right or can you giving you basically 6 ratios
More Turbo
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From: Umicorn UtopiaFantasyLand
Yes you can use it in each gear. It splits the gears
Logistics Pro
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I don't think Gear Vendor works on an E4OD. E4OD is 3 gears with over drive. C6 is only 3 gears.
So, 1200 rpm difference down shifting up hill from third to second, makes me ask the following:
- what speed?
- what rear end gear ratio?
- what tire size?
For where I live and drive, you must have tall tires, and a gears less than 3.55? guessing...
or is it the other way around, small tires, and 4.10s??
So, 1200 rpm difference down shifting up hill from third to second, makes me ask the following:
- what speed?
- what rear end gear ratio?
- what tire size?
For where I live and drive, you must have tall tires, and a gears less than 3.55? guessing...
or is it the other way around, small tires, and 4.10s??
Super Moderator
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Works fine with a 4 speed auto, but again overall gearing has to be figured.
https://www.gearvendors.com/f2wd4s.html
https://www.gearvendors.com/f2wd4s.html
Logistics Pro
Joined: Aug 2014
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And gearvendors state "Double Overdrive not to be used when towing or loaded.
If you tow or are loaded all the time, gear vendors wont' do anything for final gear on hwy, as Ford 4th OD is the final gear.
.07 ratio difference from gear venders 3rd over to ford 4th OD.
If you tow or are loaded all the time, gear vendors wont' do anything for final gear on hwy, as Ford 4th OD is the final gear.
.07 ratio difference from gear venders 3rd over to ford 4th OD.
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