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#1
04-02-2005, 07:27 AM
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Converting 1991 f150 2x4 to 4x4
I have a 1991 F150 300 six 5 spd 2x4 that I want to convert to 4x4. The truck is rust free and has only 38,000 original miles.
It looks as if I can just bolt in a front differential, transfer case & drive shafts from another F150 to make this a 4x4. I have a rusted out 4x4 with a bad frame with the parts I need. Any advice on any problems I might encounter along the way? Is the steering linkage the same with 2x4 & 4x4? Do the gears in the front differential need to match the rear gears? I know it will be a major undertaking but I really want to do this if it can be done. Your suggestions on what I might encounter would be appreciated. 
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#2
04-05-2005, 04:50 PM
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Re: Converting 1991 f150 2x4 to 4x4
Yes the Diff gears must match the back.
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#3
04-06-2005, 08:29 AM
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Re: Re: Converting 1991 f150 2x4 to 4x4
Quote:
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#4
04-07-2005, 12:47 AM
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is the donor truck the same year?
i would take it all and do it on thing at a time and take pics before you start for later referance. not sure on the diff frames for your body style but mine is a 78 f-250 4x4 they only made that frame 2 1/2 years.takes a diff gearbox than any of the others.and expensive. make sure you use good bolts like grade 8,don't forget the loc-tite and cotter pins. the harness may need some work done on it to.are the trannys the same?
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#5
04-08-2005, 08:53 PM
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Re: Converting 1991 f150 2x4 to 4x4
Quote:
The donor truck is the same year & has same 5spd trans. Thanks for the advice on the grade 8 bolts and loc-tite.
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