9" Swap Questions
#1
9" Swap Questions
I have some questions about swapping a 9' From a 57-72 F100 into my 1954 F100.
1) Is this really just a bolt on, i..e. no welding required?
2.) Are any years better than others?
3.) I am looking for 3.23 gears should I be looking manual or automatic.
Please comment on anything else I should be aware of.
Thanks for your input
Marty
1) Is this really just a bolt on, i..e. no welding required?
2.) Are any years better than others?
3.) I am looking for 3.23 gears should I be looking manual or automatic.
Please comment on anything else I should be aware of.
Thanks for your input
Marty
#2
I have some questions about swapping a 9' From a 57-72 F100 into my 1954 F100.
1) Is this really just a bolt on, i..e. no welding required?
2.) Are any years better than others?
3.) I am looking for 3.23 gears should I be looking manual or automatic.
Please comment on anything else I should be aware of.
Thanks for your input
Marty
1) Is this really just a bolt on, i..e. no welding required?
2.) Are any years better than others?
3.) I am looking for 3.23 gears should I be looking manual or automatic.
Please comment on anything else I should be aware of.
Thanks for your input
Marty
#4
#5
#6
It is basically a bolt on swap. You dont even need to re-locate the spring mounts if you use 1958 or 59 shackles. Yokes on the 9" have a couple different cup sizes for the u-joint so if you find a smaller one it is the same size as the oem axle yoke. YOu may have to have your drive shaft shortened/lengthened.
Find an axle from 1969-72 and the over all length of the axle will be the same also. easiest swap for a rear there is and the gears a super easy to change. the third member just pulls out and you put a different one in. Bullet proof
Find an axle from 1969-72 and the over all length of the axle will be the same also. easiest swap for a rear there is and the gears a super easy to change. the third member just pulls out and you put a different one in. Bullet proof
#7
The '57-'60 would be choice just because the mounting hardware would make it a direct, no mods, swap. The 9" axle itself is basically exactly the same from '57-'67, brakes and all. In '68 the axle changed a bit to allow for wider brake shoes up to '72. This modification didn't alter the overall width though. All the 9" axles from '57-'72 share the same overall width. The difference in the brake width change was made up within the axle itself.
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#8
Did the axle change or did the backing plate change (deeper dish/more offset) to accomodate the wider brakes?
#9
#10
#11
Actually I need to qualify my answer above. I put my D44 brakes, complete, on the 9" and the drum was sticking out proud of the backing plate by 1/2". That implies the backing plates were not changed. At that point I didn't go any further, just used the 9" brakes. Just looking at them the 2.5" backing plates certainly appeared to be dished more than the D44's 2" plates.
#12
Actually I need to qualify my answer above. I put my D44 brakes, complete, on the 9" and the drum was sticking out proud of the backing plate by 1/2". That implies the backing plates were not changed. At that point I didn't go any further, just used the 9" brakes. Just looking at them the 2.5" backing plates certainly appeared to be dished more than the D44's 2" plates.
Here's a picture to illustrate kinda what I'm referring to (Both are 9" axle shafts out of trucks one early, one post-'68)
#13
1968/72 F100: There are two different 9" rear axles. One has 28 spline axleshafts with/without Limited Slip.
The other has a 9 3/8" ring gear, 31 spline axleshafts and 4 pinion Traction-Lok.
Only 5 parts interchange between the 9 & 9 3/8: Housing gasket, pinion seal, one pinion bearing and cup, pilot bearing retainer.
EVERYTHING else is different! Parts for the 9 3/8" can be difficult to find.
1968/72 F100 rear brakes are the same: 11" x 2 1/4" / 1948/52 F1, 1953/67 F100: rear brakes are 11" x 1 3/4"
Mid year 1969 9" (not 9 3/8"): Ford changed the differential bearings from ball to "slim line" tapered roller.
Warranty Plate AXLE code for 3.23-1 ratio w/o Limited Slip: 1965 = 07 / 1966/72 = 17 / FoMoCo didn't offer a 9" with Limited Slip in F100's until 1968.
1965/72 F100: 3.23-1 commonly found with A/T, very few M/T's came with this ratio.
1965/72 F100's with a two piece driveshaft have a u-joint that has (2) 1310 cups, (2) 1330 cups: Ford: C5TZ-4635-F / Spicer: 210392-X
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