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post #1 of 9 (permalink) Old 04-02-2014, 03:39 AM Thread Starter
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Looking for more

Hey psn family so as I get into doing my truck and I have come to the transmission. Now that bad boy is getting rebuilt, but I want more gears because I was told that would jump up my mpg so what way should I go and what to buy to get me there. Thanks you guys for the help

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post #2 of 9 (permalink) Old 04-02-2014, 04:04 AM
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Re: Looking for more

Not sure how you're going to add more gears to a transmission... is it a 6 speed or an auto? What gears do you have in your rear end?


1997 F350 SRW CCLB 7.3 ZF5 4x4
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post #3 of 9 (permalink) Old 04-02-2014, 04:10 AM
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Re: Looking for more

Gear Vendors Overdrive
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post #4 of 9 (permalink) Old 04-02-2014, 08:07 AM
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Re: Looking for more

Well then, install the overdrive and take the installed cost over the fuel saved and calculate just how many years it takes to pay off.

There's a fuel economy section on this site.
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post #5 of 9 (permalink) Old 04-02-2014, 01:23 PM Thread Starter
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Re: Looking for more

Thanks guys I am not sure but the rear end is a dana 80 and its an auto so 4.33 ? I have heard something about Gear Vendors overdrive, do I get to keep my transmission?

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post #6 of 9 (permalink) Old 04-02-2014, 02:04 PM
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Re: Looking for more

Should have 3:73's or 4:10's I would think


1997 F350 SRW CCLB 7.3 ZF5 4x4
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post #7 of 9 (permalink) Old 04-02-2014, 03:24 PM
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Re: Looking for more

Quote:
Originally Posted by Powerstroker350 View Post
Thanks guys I am not sure but the rear end is a dana 80 and its an auto so 4.33 ? I have heard something about Gear Vendors overdrive, do I get to keep my transmission?

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Yes , goes in between. Someone else had a recent thread with theirs they just installed and iirc he gained 3 mpg on highway driving. It is expensive though and if you do the math it will probably take you a longtime to recoup. I think he drove alot and was figuring 2 years. Dont know which forum i saw the thread on but it is within the last month.
We have ranger o/d offering 27% od on an old FJ which is way cheaper but i believe it is for manuals only.

03 7.3 with the new nose 8" and 37's 124k original and adding slowly

Sold - 00 X, 01 350, 02 350
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post #8 of 9 (permalink) Old 04-02-2014, 08:14 PM
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Re: Looking for more

Gear Vendors goes on the tail end of your transfer case w an adapter, the drive shaft is then shortened and your good to go. I've been looking at this as well. It would be nice to split all the gears and have double OD. With 3:73 gears and stock tires at about 70 mph our trucks tach around 2000 rpm. This is the sweet spot for the 7.3, anything over that rpm range and our fuel economy starts to dwindle. But realistically, who drives 70 on the open road. I sure don't. Heck, the speed limit on some highways in Texas is up to 80 mph, So double over would be a dream on the open road. Not to mention being able to split that big drop between 3rd to 4th that is apart of the 4r100's dna. Good luck with your install.

Carlos Briceno
99.5 CC F-250 4X4 with Full engine Rebuild.
02 Excursion 4X4
03 SC F-250 4X4
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post #9 of 9 (permalink) Old 04-02-2014, 10:42 PM Thread Starter
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Re: Looking for more

Quote:
Originally Posted by Country View Post
Gear Vendors goes on the tail end of your transfer case w an adapter, the drive shaft is then shortened and your good to go. I've been looking at this as well. It would be nice to split all the gears and have double OD. With 3:73 gears and stock tires at about 70 mph our trucks tach around 2000 rpm. This is the sweet spot for the 7.3, anything over that rpm range and our fuel economy starts to dwindle. But realistically, who drives 70 on the open road. I sure don't. Heck, the speed limit on some highways in Texas is up to 80 mph, So double over would be a dream on the open road. Not to mention being able to split that big drop between 3rd to 4th that is apart of the 4r100's dna. Good luck with your install.
Thanks country that is what I wanted to hear I live in Michigan just north of Detroit so I do a lot of highway driving most of the time with a trailer

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