ford 9.75'' in a WJ? - JeepForum.com

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post #1 of 23 Old 10-09-2012, 06:02 PM Thread Starter
adavis39
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ford 9.75'' in a WJ?

alright, so I have been looking around for a while for an axle to start a long build on and swap into the back of the WJ. ultimately I will be doing both once i retire it from DD duty but I am starting with the rear. My goal is to ultimately run 36 or 37's. I was also looking to do something a little out of the box. I recently cam across a Ford 9.75'' out of an '01 F-150. It has disk brakes and the guy only wants $150 for it. it has 34 spline, 1.705'' shafts, a 9.75 ring diameter (same as a 60) and larger diameter tubes and higher torque rating. Its also 65'' wms to wms. I can get alloy shafts, an ARB and go as low as 5.13 gears. Basically the only down side I see is that its a c-clip. This will be my first swap and will take quite a while, mostly due to funds but I just wanted to get some input from more experienced guys and what they thought about it. Heard any positives or negatives? Also, I run clayton long arms so I would probably run his universal 4 link truss for the uppers....all opinions welcome


2002 WJ Limited 4.7: 6" Clayton REALLY long arms....yep, they are longer than yours SOLD : (
1998 Platinum 5.9 DD
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"In a world that he did not create, but he will go through it as if it is his own creation. Half man, half beast, whatever it is it is weird, it is ticked off and it calls itself Slash"
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post #2 of 23 Old 10-09-2012, 06:21 PM
MGDWJ
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i have a semi float dana 60 in on of my jeeps. its a 35 spline c clip semi float axle. im running stock shafts and have the spider gears welded up running 40's. i have yet to break a shaft and i have beat the living piss out of it for many years.

you said its a 1.705" shaft but a 34 spline?? a 40 spline shaft is 1.708" and a 35 spline is generally 1.5". do the shafts neck down?
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post #3 of 23 Old 10-09-2012, 06:30 PM Thread Starter
adavis39
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yeah, its 34 spline.....according to the specs ive found, its 1.705 for the '00 and up models...it does look like they neck down though because ive also seen where it compares the axle to a 60. it says "min shaft diameter on the 9.75 is 1.29 and the 60 is 1.36"

2002 WJ Limited 4.7: 6" Clayton REALLY long arms....yep, they are longer than yours SOLD : (
1998 Platinum 5.9 DD
2007 WK Overland 5.7 wifes DD
TNJEEPS.COM

BUILD: http://www.jeepforum.com/forum/f197/...-crap-1399123/

"In a world that he did not create, but he will go through it as if it is his own creation. Half man, half beast, whatever it is it is weird, it is ticked off and it calls itself Slash"
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post #4 of 23 Old 10-11-2012, 01:12 PM
Bama_WJ
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Here are some specs I pulled off fourwheeler.com about the Sterling 9.75:

Quote:
Originally Posted by Fourwheeler.com
SPECIFICATIONS
Ford 9.75 Semi Float vs Dana 60 Semi Float
Axle 9.75
Dana 60
Ring gear dia. 9.75
9.75
Pinion shaft dia. 1.970
1.625
Axleshaft splines/dia. 34/1.37
35/1.50
Axleshaft min. dia. 1.29
1.36
Axle tube dia./wall 3.25/.180
3.12/.250
Output torque max 6,100
5,500
Output torque cont. 1,500
1,500
GAW 4,500
5-5,500
Here is the rest of the article if you'd like to read it:

Ford F-150 9.75 Axle Build - Unsung Hero

Daniel
1 Ton WJ Build In Progress

The Daily: 2011 Chevy Cruze Eco - Trifecta tuned and 37+ MPG

Wife's Jeep: 2006 WK Overland - OME HD Lift, 265/70/17 BFG AT's, 1.25" SpiderTrax wheel spacers, 3" Gibson Cat-Back

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post #5 of 23 Old 10-11-2012, 01:48 PM Thread Starter
adavis39
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thanks man....i had read that one but I appreciate the research. ive decided to just go for it and see how the build goes. Im going to pick it up saturday and start tearing it down.

2002 WJ Limited 4.7: 6" Clayton REALLY long arms....yep, they are longer than yours SOLD : (
1998 Platinum 5.9 DD
2007 WK Overland 5.7 wifes DD
TNJEEPS.COM

BUILD: http://www.jeepforum.com/forum/f197/...-crap-1399123/

"In a world that he did not create, but he will go through it as if it is his own creation. Half man, half beast, whatever it is it is weird, it is ticked off and it calls itself Slash"
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post #6 of 23 Old 10-11-2012, 02:48 PM
Bama_WJ
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For $150, you really can't go wrong with those specs. Seems like it would take abuse from a 35-37" tire fairly well.

And with how popular the F150 is, I'm sure there is a pretty decent aftermarket for beefier shafts if needed.

Daniel
1 Ton WJ Build In Progress

The Daily: 2011 Chevy Cruze Eco - Trifecta tuned and 37+ MPG

Wife's Jeep: 2006 WK Overland - OME HD Lift, 265/70/17 BFG AT's, 1.25" SpiderTrax wheel spacers, 3" Gibson Cat-Back

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post #7 of 23 Old 10-12-2012, 04:11 AM Thread Starter
adavis39
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the only real downside I had seen was the tube wall.....i think ill look into sleeving it. other than that i think it should handle 37's just fine esp with Yukon gears and shafts.

2002 WJ Limited 4.7: 6" Clayton REALLY long arms....yep, they are longer than yours SOLD : (
1998 Platinum 5.9 DD
2007 WK Overland 5.7 wifes DD
TNJEEPS.COM

BUILD: http://www.jeepforum.com/forum/f197/...-crap-1399123/

"In a world that he did not create, but he will go through it as if it is his own creation. Half man, half beast, whatever it is it is weird, it is ticked off and it calls itself Slash"
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post #8 of 23 Old 10-12-2012, 11:00 AM
Bama_WJ
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Yea, that was the only thing that really caught my eye. Tubes that are a little less than 3/16" might be a bit of concern. I would think if you made a decent, end-to-end truss it would be fine.

Daniel
1 Ton WJ Build In Progress

The Daily: 2011 Chevy Cruze Eco - Trifecta tuned and 37+ MPG

Wife's Jeep: 2006 WK Overland - OME HD Lift, 265/70/17 BFG AT's, 1.25" SpiderTrax wheel spacers, 3" Gibson Cat-Back

North Alabama Jeep
42RE Vent Mod - Seal your transmission!
YouTube. - My Video Channel
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post #9 of 23 Old 10-12-2012, 11:37 AM Thread Starter
adavis39
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yeah, i really like the ARTEC sterling 10.25 one....it will fit the 9.75'' with little mod

2002 WJ Limited 4.7: 6" Clayton REALLY long arms....yep, they are longer than yours SOLD : (
1998 Platinum 5.9 DD
2007 WK Overland 5.7 wifes DD
TNJEEPS.COM

BUILD: http://www.jeepforum.com/forum/f197/...-crap-1399123/

"In a world that he did not create, but he will go through it as if it is his own creation. Half man, half beast, whatever it is it is weird, it is ticked off and it calls itself Slash"
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post #10 of 23 Old 10-13-2012, 02:45 PM
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post #11 of 23 Old 10-13-2012, 02:53 PM Thread Starter
adavis39
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Quote:
Originally Posted by pcoplin View Post
Is that the 7 lug axle?
well here it it....and it 5 lugs...time to start breaking it down
Attached Thumbnails
rsz_img_1320.jpg   rsz_img_1321.jpg   rsz_img_1322.jpg  

2002 WJ Limited 4.7: 6" Clayton REALLY long arms....yep, they are longer than yours SOLD : (
1998 Platinum 5.9 DD
2007 WK Overland 5.7 wifes DD
TNJEEPS.COM

BUILD: http://www.jeepforum.com/forum/f197/...-crap-1399123/

"In a world that he did not create, but he will go through it as if it is his own creation. Half man, half beast, whatever it is it is weird, it is ticked off and it calls itself Slash"
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post #12 of 23 Old 10-15-2012, 06:42 PM Thread Starter
adavis39
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so once i get this thing broken down i'm going to stick with coils springs....im probably going to run Claytons truss for the upper control arms....anyone know of the best place for spring perches and shock mounts? Im thinking either use Claytons WJ brackets for the dana 60 (will have to grind them a little to fit the larger tubes on 9.75'') or maybe ballistic fab? any suggestions?

2002 WJ Limited 4.7: 6" Clayton REALLY long arms....yep, they are longer than yours SOLD : (
1998 Platinum 5.9 DD
2007 WK Overland 5.7 wifes DD
TNJEEPS.COM

BUILD: http://www.jeepforum.com/forum/f197/...-crap-1399123/

"In a world that he did not create, but he will go through it as if it is his own creation. Half man, half beast, whatever it is it is weird, it is ticked off and it calls itself Slash"
adavis39 is offline  
post #13 of 23 Old 10-15-2012, 07:35 PM
Bama_WJ
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Have you checked out RuffStuff?

Daniel
1 Ton WJ Build In Progress

The Daily: 2011 Chevy Cruze Eco - Trifecta tuned and 37+ MPG

Wife's Jeep: 2006 WK Overland - OME HD Lift, 265/70/17 BFG AT's, 1.25" SpiderTrax wheel spacers, 3" Gibson Cat-Back

North Alabama Jeep
42RE Vent Mod - Seal your transmission!
YouTube. - My Video Channel
Facebook - Wheeling Pictures/Videos
The Jeep Wave. Bringing it back.
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post #14 of 23 Old 10-15-2012, 10:04 PM
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so at the end of the build what will be left of the $150 assembly? a housing with very thin wall tubing? with all the really cool 9" housings on the market for relatively cheap they tend to be the most economical part to upgrade. you have to give yourself a terminal point not to pass on any junkyard rebuild. its like taking a nice jeep and hacking it apart to the point where you have a jeep-shaped buggy. it really doesnt make sense. at that point youve ruined a good part-getting vehicle and replaced it with a mediocre buggy that would be much better if it was designed from the ground up as a buggy from the beginning. all im trying to say is if you plan to replace almost everything then just build from scratch.

-insert meaningless out-of-place political diatribe-
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post #15 of 23 Old 10-15-2012, 10:22 PM
jason m
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Quote:
Originally Posted by fratis View Post
its like taking a nice jeep and hacking it apart to the point where you have a jeep-shaped buggy. it really doesnt make sense. at that point youve ruined a good part-getting vehicle and replaced it with a mediocre buggy that would be much better if it was designed from the ground up as a buggy from the beginning. all im trying to say is if you plan to replace almost everything then just build from scratch.
Hey is that a cheap shot at me , just joking
Op how thin are those walls, thinner than 3/16"s or around that size?

Jason.

1993 YJ 4.0 60 Front, Rear steer 60, bolth spooled, 5.38's, 700r/241 39.5 iroks and beating it like it owes me money.

And on the 8th day, God created the 14 bolt...
http://www.jeepforum.com/forum/f149/...buggy-3693817/
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