U joints
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Senior User
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From: Tennessee
U joints
my 86 blew the u joints and after going to Autozone they told me it takes 2 diffrent size joints a DG 4800 and a DG 4900 8 being the front and 9 being the rear.. the rear joint went in fine and sits secure in the pinion yoke, hoever the front one presses into the tranny yoke fine, but the bearing caps are too small where they press into the driveshaft itself. They swear up and down that its the right bearing cap but if it doesnt press in, then its not.
Ford Parts Specialist
Joined: Nov 2006
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From: Simi Valley, CA
my 86 blew the u joints and after going to Autozone they told me it takes 2 diffrent size joints a DG 4800 and a DG 4900 8 being the front and 9 being the rear.. the rear joint went in fine and sits secure in the pinion yoke, hoever the front one presses into the tranny yoke fine, but the bearing caps are too small where they press into the driveshaft itself. They swear up and down that its the right bearing cap but if it doesnt press in, then its not.
The 1980/89 Ford truck parts catalog lists THREE different front U-Joints for a 1986 F150.
It depends on the wheelbase, 2WD or 4WD, engine size and transmission type.
Then there's this factor to consider. At some point someone may have changed the driveshaft.
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From: Tennessee
I knew they were full of $#%& when they said it was the right bearing cap.. the sahft on my truck has a what looks like a counterbalace on the tailshaft end yoke if thats any help as to if its a stock shaft of replacement, but no one carries any other u joints than the 48 and 49 or w/e they have it part #'ed at their store.
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From: Tennessee
only problem is I got the first set from O'Reilys and they were wrong too, Advance has to order them and im banking on Napa to have the right ones... Either way I'll be bringing my shaft ( in pieces ) into the stores to make them look even stupider when they cant match a u joint to the shaft lol
Ford Parts Specialist
Joined: Nov 2006
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From: Simi Valley, CA
only problem is I got the first set from O'Reilys and they were wrong too, Advance has to order them and im banking on Napa to have the right ones... Either way I'll be bringing my shaft ( in pieces ) into the stores to make them look even stupider when they cant match a u joint to the shaft lol
1986 F150 302: What is the wheelbase? Is it 2WD or 4WD? What transmission?
I can give you the Ford part numbers, and most likely the Spicer part numbers.
Either numbers can be crossed over by autoparts stores to the brands they sell.
I can also give you the bearing cap and other U-Joint specs.
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From: Tennessee
its an 86 f-150 with the 5.0 EFI regular cab regualr bed, 2wd with a AOD automatic I believe its called.... its got P R N OD D L
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Ford Parts Specialist
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I need the exact wheelbase...it's listed on your trucks Certification Label.
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From: north battleford
my 86 f150 4x4 133wb
took 4800's on all 4 spots.(cups same size).my ford listing at work showed that it was to be same cups(rear)and small/big on front) but they all took the 4800#
c3az 4635 m
took 4800's on all 4 spots.(cups same size).my ford listing at work showed that it was to be same cups(rear)and small/big on front) but they all took the 4800#
c3az 4635 m
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From: Tennessee
yep I found that but my luck the corner where the WB is displayed is partially torn off so this is what I got as for certification.. WB 17 ( possible # missing ) Body KB4 Trans T and Axle 19
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Mine also takes the same size, front and rear. 1981 F-150, 2wd , 133 wheelbase, T-18.
Post Fiend
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From: Northern California
It's most likely, 117" as that is the short wheelbase, but to be sure you could measure from center hub on the front, to center hub on the back, and that will give you your wheelbase measurement. Just convert the feet into inches.