ford 9"

[94xj]

has anyone swapped in a ford 9" i can pick one up for free just wondering if its worth the work

[TheBigDogg]

What are you using for the front, it will be a different bolt pattern, are you keeping it full width?


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[ironmanandy]

I have swapped several. The spring pad width on most broncos and mid to late 70s trucks is close enough to bolt right up.

Parts are readily available and you can make them Indestructible for a reasonable price.

Keep in mind that the 9" has the lowest pinion of any axle made.
You will want to run an SYE to keep the vibes down.

They are stupid strong though as far as ring and pinion.

If you feel like dishing out close to 2k you can get a high pinion 3rd member geared and locked from currie. You can also get 35 spline shafts for the setup fairly cheap.

They combo well with ford front 44s

You can put a 9" in the back of an XJ using the simple install kit from ruff stuff for around 125.oo

The front 44 is a different story. I would always budget at least 1K for that.

Andy

[94xj]

i plan on running a d44 out of a 79 bronco to match it thanks for the info

[94xj]

should i spend the money on getting disk brakes for the rear

[ironmanandy]

The drum brakes are heavier and can pack full of mud.

Its up to you. I would explore your options. I am a fan of the ford explorer disc brake set up. It uses the same caliper as the jeep grand cherokee ZJ rear discs and you could more than likely run a ZJ master and proportioning valve with almost stock results.
A

[94xj]

another question what size gears should i run i plan on puttin 37s under it

[ironmanandy]

If you are running an inline 6 with a np231 with the 2.72:1 LR i would run a 4.88

Its a great gear but still streetable.

Andy

[94xj]

i will be using everything stock besides the ford 9" and d44

[LizardRunner]

one other thing to keep in mind on the ford 9" is that you are going to loose clearance distance. Probably not a problem if your going to run big tires like 35-37 inchers.

[94xj]

how much clearance will i lose 1-2 inches?

[LizardRunner]

from what I understand about this swap you would loose around 2-3" of clearance.

[94xj]

hopefully the 37s will help out with that

[LizardRunner]

with tires that size you should not feel the crunch of the pumpkin hitting anything.

[modestmar00xj]

good question xj89! right now i can get a good deal on a ford 9" and i was asking the same question. i think im still going to go with the 8.8

[03ghosthemi]

Just remember the HP44 out of a 79 Bronco has the cast in wedges not the welded on ones so you would need to run the Ford rad arms or have it retubed. I have started collecting parts for my 44/9 fullwidth build. I grabbed mine out of a 77 F150.

Bill

[94xj]

thanks for the info