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Swapping in ford 9in rear in my 53 f100

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Old 08-22-2015, 04:51 PM
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Swapping in ford 9in rear in my 53 f100

I want to get the 9in I bought in my truck. But I am not sure what u-bolts to use knowing it is larger diameter then the original one. There will be space in between the ubolts and the springs, is this ok? I have a pair of original shock plates of a 350 series truck which will work with the 3in diameter. I would like to be able to use them. The other question I have is I want to remove the three overload leafs that are on my truck. How much will this lower the rear? They are cracked so they need to be removed. Also will this affect the regular springs any? I know they really need to me replaced but do not have the money for that right now. I want to get the 9in in since it has 3:23 gears which should help my gas mileage and not make the 350 run such high rpms.(I know some of you are cringing right no chevy in a ford) It was in it when I bought the truck. I plan to replace it one of these days, but there are more crucial things that need done.
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Old 08-22-2015, 05:03 PM
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I had the same situation with about 1/8" between the U-bolts and the springs, and have not had any problems. I think as long as you use a stiff spring plate (not just a flat plate like some vendors sell), it's OK to have some gap, not a lot.
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Old 08-22-2015, 06:13 PM
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I used the shock mounts, lower plates, from a 57-60 F100. I used the ubolts that came with a mid fifty kit I bought when I bought the springs and the original top plate.

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Old 08-23-2015, 03:00 PM
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The u bolts that came with my 9" were to short so I bought some from Napa, #650-4014 , U bolt 1/2x3 1/4x9RD, cut--20. 63 . They fit fine with some extra to cut off if I choose. FYI these u bolts had not been torqued at time of pic. Also I was told on my recent thread that the plate and bolts off an F2 will fit the 9" plus has the shock mount as part of the plate. I included a pic of the F2 plat and u bolts ,(the second pic) you mite pm 38 coup He may have access to a set???
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Old 08-23-2015, 03:09 PM
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This is the way mine is mounted:
Click the image to open in full size.
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Old 08-23-2015, 11:52 PM
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The F2 set up that Ax and Schuyler have looks far superior to having the round U Bolts tight against the axle tubes in my opinion, much stouter.
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Old 08-24-2015, 01:25 AM
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The stock bolts do actually fit the 9" axle tubes...... but its tight....

I made som modifications to the new spring perches and made the holes in the lower damper plate slightly elongated (not much at all), same thing with the plates that goes ontop of the springs and voila.

check the post in the lower half on this link and you will see how it can be done

DinnerHill SpeedShop: Rear axel (the easy way)
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