71 F100 - Rear Wheel Bearings
#1
#2
#3
Most F100 Bumpsides had Ford 9-inch rear ends. Some had Dana 44 rears. Some ('68-'72) had 9-3/8" rear ends with 31-spline axles --and as I found out more recently, the 9-3/8" rear ends could have TWO different 31-spline axles.
One with a 1-5/8" I.D. by 3-9/64" O.D. axle bearing (3,600 lb axle and Traction-Lok differential) or one with a 1-17/32" I.D. by 3-9/64" O.D. axle bearing (3,300 lb axle with an open differential).
I have a '69 F100 that had 28 spline axles but I converted it to 31-spline axles from a 9-3/8" (open differential) rear end when I installed a Ford 9-inch N-case 3rd member with a 31-spline Traction-Lok differential. The axle bearings are 3-9/64" O.D. by 1-17/32" I.D. (for a 3,300 lb axle).
I got the axle bearings and seals for my setup from NAPA. The bearings were regularly $60-something each but, they gave me a discount which made them $48.00 each.
https://www.ford-trucks.com/forums/1...l#post15054362
One with a 1-5/8" I.D. by 3-9/64" O.D. axle bearing (3,600 lb axle and Traction-Lok differential) or one with a 1-17/32" I.D. by 3-9/64" O.D. axle bearing (3,300 lb axle with an open differential).
I have a '69 F100 that had 28 spline axles but I converted it to 31-spline axles from a 9-3/8" (open differential) rear end when I installed a Ford 9-inch N-case 3rd member with a 31-spline Traction-Lok differential. The axle bearings are 3-9/64" O.D. by 1-17/32" I.D. (for a 3,300 lb axle).
I got the axle bearings and seals for my setup from NAPA. The bearings were regularly $60-something each but, they gave me a discount which made them $48.00 each.
https://www.ford-trucks.com/forums/1...l#post15054362
#5
That's what I had put on my 28-spline axles nearly four years ago, when I went through the brakes, bearings and seals at all four corners.
The (SKF) axle bearings I just recently bought through NAPA are the same size for my 31-spline axles as what fit my 28-spline axles.
I didn't have any problems out of the National bearings during the time I ran them but, the more expensive SKF bearings I just got are a much better quality than what I had.
The bearing retainer rings are also about twice as wide (beefier) than the rings that came with the National bearings. --They would have nearly twice the surface area and grip on the axle, compared to the rings of the National bearing set I had.
The (SKF) axle bearings I just recently bought through NAPA are the same size for my 31-spline axles as what fit my 28-spline axles.
I didn't have any problems out of the National bearings during the time I ran them but, the more expensive SKF bearings I just got are a much better quality than what I had.
The bearing retainer rings are also about twice as wide (beefier) than the rings that came with the National bearings. --They would have nearly twice the surface area and grip on the axle, compared to the rings of the National bearing set I had.
#7
Thanks so much, guys. I like the sound of the heavy duty SKF.
I do quite a bit of towing/hauling here on the farm.
My 71 Pick Up has a 9" Rear End, with a 28 Spline.
I would give the tag info on the rear end, but believe it, or not - it's incorrect (not the right one).
This Spring all this is going to get done. Then, we put in the 3.5 to 1 ring & pinion!
Thanks,
Bob
I do quite a bit of towing/hauling here on the farm.
My 71 Pick Up has a 9" Rear End, with a 28 Spline.
I would give the tag info on the rear end, but believe it, or not - it's incorrect (not the right one).
This Spring all this is going to get done. Then, we put in the 3.5 to 1 ring & pinion!
Thanks,
Bob
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