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Old 06-09-2003, 10:25 PM   #1 (permalink)
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what years did ford use that IFS crap?

From what I'm gathering from the D60 FAQ, it looks like from 1980-1985, both the F250 and F350 had that funky IFS. Is this the case or did they use D44s during this period or something? Looking for a donor vehicle for axles to my Wagoneer project.
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Old 06-09-2003, 10:35 PM   #2 (permalink)
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I think Ford used the dana 50 ifs in 1980. I am not sure about the other years.
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Old 06-10-2003, 01:16 AM   #3 (permalink)
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'80-'85 F350s and all '80-'97 F250 have the leafspring TTB axle
They are Dana44s or Dana50s. I'm not sure the years it switched over to the 50. I know a '88 F-250 with a 351 is a D44.
F-350s got the D50 sooner than the 250.

If you're lookin for a D60, skip these years.
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Old 06-10-2003, 01:59 PM   #4 (permalink)
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The F-350 is a straight axle/leaf sprung as far as I know in all years.

Ford introduced the TTB in 1980 in the
F-150 with a D-44 (coils)
F-250 with D-50 (leaf sprung)
According to some, the D-50 and D-44 third member where interchangeable. (I never verified this)

When ordering parts for these front, you have to specify that it is a TTB model because the parts (lockers) are not interchangeable with straight axle models.

Early model rangers had a D-28 TTB set up (breaks axles like glass)
It was later upgraded to the D-30 (I think).
The 4.0 models and explorer came with D-35 (I think in the later years.

In 1997 they swithed to the current IFS front in the F-150 and light F-250. I don't know anything about the newer body F-250HD and F-350.

EDIT: Also see this thread http://www.pirate4x4.com/forum/showt...hreadid=148361
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Last edited by SilverZuk; 06-10-2003 at 02:04 PM.
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Old 06-10-2003, 03:32 PM   #5 (permalink)
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Quote:
Originally posted by SilverZuk

Early model rangers had a D-28 TTB set up (breaks axles like glass)
It was later upgraded to the D-30 (I think).
The 4.0 models and explorer came with D-35 (I think in the later years.


Rangers never came with d30s, although some did come with 35's, Im not sure what years or configurations except that all 4.0 rangers came with TTB 35s except 98+ which are SLA D35s for all models.
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Old 06-10-2003, 03:43 PM   #6 (permalink)
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I assume all you care about is F-350's
Pre 1980 they were all solid axles
1980-85 ALL TTB (ford;s IFS)
86 was mix and match with let over parts, some were TTB other Solid axles
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Old 06-10-2003, 04:26 PM   #7 (permalink)
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cool. I'll stay the hell away from those years. I would like a D60 if I can find a donor that won't break the bank, I'm keeping my eyes peeled.
Thanks guys,
Rob
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Old 06-11-2003, 08:51 AM   #8 (permalink)
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Roar Johannesen is racing a D50 IFS with great success. And he pounds it with well over 800 hp. Check it out!

http://home.chello.no/~lightfoot/
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Old 06-11-2003, 04:25 PM   #9 (permalink)
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Quote:
Originally posted by SilverZuk


When ordering parts for these front, you have to specify that it is a TTB model because the parts (lockers) are not interchangeable with straight axle models.

This is also incorrect.
There is nothing different inside the diff of a TTB D44 vs. a straight D44 outside of a circlip on the end of the right axleshaft to retain it in the housing. If a particular diff won't allow reinstallation of that clip (ARB for example), you use a stiff spring in the slip-shaft to keep it in there.

The D50 ARB was designed long before the SA D50s came about, also.
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