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1987 - 1996 F150 & Larger F-Series Trucks 1987 - 1996 Ford F-150, F-250, F-350 and larger pickups - including the 1997 heavy-duty F250/F350+ trucks

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  #1  
Old 06-27-2011, 10:25 AM
blacklab1 blacklab1 is offline
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F350 to F250 axle swap

I've found front and rear axle assemblies from an 89 f350 with 4-10 gears.
I will have the complete front tie rods pitman arm springs, wheel to wheel,with springs.
I want to swap them into my 91 f250, with open diffs in 3.55
What kind of issues and or extra parts am I gonna need. Can I use my F250 springs [recently replaced]. Any help advice appreciated.
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  #2  
Old 06-27-2011, 05:13 PM
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direct bolt in. make sure you get the track bar and bracket also.
you can use the 250 springs, or swap in the 350 springs.
do yourself a favor and buy new spring u bolts.
it should only take you 5-6 hours to do if you have a set of torches to cut the old rear out and air tools to put it back together.
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Old 06-29-2011, 09:34 AM
blacklab1 blacklab1 is offline
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Will there be any problems with antilock or speedo when I swap the rear. The rear is a 10.25 also 4.10
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Old 06-29-2011, 09:42 AM
88dually 88dually is offline
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88 an 91 have speed sensors on the rears w/10.25's, mine did, an abs is on the driver front frame rail. Should be an easy swap
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'88 F350 4x2 crew dually 351 c6 4.10 / (project) looking for ideas, AWD conversion ?:
'96 Xplorer AWD 5.0L 4R70W....(wife had a brain fart) Totaled an gettin stripped
'00 Xplorer 4.0l, auto, 4x4
'03 Jeep Liberty 3.7l. Auto, 4x4 (wifes)
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Old 06-29-2011, 09:51 AM
blacklab1 blacklab1 is offline
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Thanks for the info, I'm only getting the complete diffs with springs, nothing else.
I don't want to start this swap and then find I have to buy a bunch of parts to make it work.
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  #6  
Old 06-29-2011, 09:54 AM
88dually 88dually is offline
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Buy NEW u-bolts an re-tighten after a few hundred miles, learned the hardway
you may have to swap u-joints
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'88 F350 4x2 crew dually 351 c6 4.10 / (project) looking for ideas, AWD conversion ?:
'96 Xplorer AWD 5.0L 4R70W....(wife had a brain fart) Totaled an gettin stripped
'00 Xplorer 4.0l, auto, 4x4
'03 Jeep Liberty 3.7l. Auto, 4x4 (wifes)
-------------------------------------------------
It's hard to show dominance over your cat as it watches you clean it's litter box
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  #7  
Old 06-29-2011, 10:26 AM
blacklab1 blacklab1 is offline
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OK being old and old school, what does the antilock have to change
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  #8  
Old 06-29-2011, 10:29 AM
88dually 88dually is offline
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nothing on my 89, it was a 92 or 93 rear i put in
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'88 F350 4x2 crew dually 351 c6 4.10 / (project) looking for ideas, AWD conversion ?:
'96 Xplorer AWD 5.0L 4R70W....(wife had a brain fart) Totaled an gettin stripped
'00 Xplorer 4.0l, auto, 4x4
'03 Jeep Liberty 3.7l. Auto, 4x4 (wifes)
-------------------------------------------------
It's hard to show dominance over your cat as it watches you clean it's litter box
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  #9  
Old 06-29-2011, 11:18 AM
blacklab1 blacklab1 is offline
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I have't seen the rear diff, if it doesn't have the speed sensor I can't use it, am I right?
Can I use the gear set out of my TTB front in the F-350 solid axle?
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Old 06-29-2011, 11:24 AM
88dually 88dually is offline
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u can use it w/o the sensor w/o abs an the lite on.
u cant use the gears from the ttb into a solid axle
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'88 F350 4x2 crew dually 351 c6 4.10 / (project) looking for ideas, AWD conversion ?:
'96 Xplorer AWD 5.0L 4R70W....(wife had a brain fart) Totaled an gettin stripped
'00 Xplorer 4.0l, auto, 4x4
'03 Jeep Liberty 3.7l. Auto, 4x4 (wifes)
-------------------------------------------------
It's hard to show dominance over your cat as it watches you clean it's litter box
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  #11  
Old 06-29-2011, 01:21 PM
blacklab1 blacklab1 is offline
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I just unplugged the sensor everything seems to work fine with the stock rearend.
So I'm gonna go for it, [more bashed knuckles].
Hope I can bug some more if I need help as the project goes along.
Thanks
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  #12  
Old 06-29-2011, 01:53 PM
cozzb cozzb is offline
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Make sure you get the driver side lower spring plate from the 350 as it is obsolete and hard to find. Your 250 lower plate wont work.

As others said, get the tracbar and mount too.

Use the 350 springs - they ride better and are arched correctly for this application. Everything else is pretty much bolt in. Your pitman arm will work with it too.

Some people do the shackle reversal kit and use superduty front springs and claim even better ride.
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  #13  
Old 06-29-2011, 04:17 PM
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you must use the F350 steering linkage. the 250 linkage will not work with the Dana 60.
and you must also use the track bar and bracket otherwise the front axle will flop all over the place.
also, the speedometer is cable driven off the back of the transfer case on both the 88 and 91, not electronically driven. electronic speedometers started in 92.
__________________
Tom
Moderator of the "not wrapped too tight forum"
rarely in life do you meet a person that will drop everything to help a stranger,
and give the shirt off his back to a friend.
Steve Price was that kind of person.
Godspeed "window licker", the short bus will never be the same with you gone.
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  #14  
Old 06-29-2011, 09:05 PM
88dually 88dually is offline
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so the connector on my rears was for abs only ? i thought it did both
__________________
'88 F350 4x2 crew dually 351 c6 4.10 / (project) looking for ideas, AWD conversion ?:
'96 Xplorer AWD 5.0L 4R70W....(wife had a brain fart) Totaled an gettin stripped
'00 Xplorer 4.0l, auto, 4x4
'03 Jeep Liberty 3.7l. Auto, 4x4 (wifes)
-------------------------------------------------
It's hard to show dominance over your cat as it watches you clean it's litter box
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  #15  
Old 06-29-2011, 10:08 PM
blacklab1 blacklab1 is offline
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Thanks for the info, so you're saying I cant use my 250 front springs. I just picked up all the stuff front diff with springs steering linkage track bar et all.
The rear has the plug in for the abs. Can I swap the full floater carrier, etc into my light duty, and what's the advantage to the full floater?
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Old 06-29-2011, 10:08 PM
 
 
 
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