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Old 11-11-2005, 11:47 PM   #1
ronh72c10
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Swapping in 3/4 ton axles

I've got a 72 3/4 ton 4x4 pickup and am thinking about swapping the axles into the 71 Jimmy.

Anybody ever try this? Is it a direct bolt in or would some fabrication be required?

Ron
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Old 11-12-2005, 08:22 AM   #2
67-72williso
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Re: Swapping in 3/4 ton axles

Should bolt rite in. Your high gearing might not be as good. HO72 4.10 at best.
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Old 11-12-2005, 08:27 AM   #3
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Re: Swapping in 3/4 ton axles

Several members here have done 3/4 ton, some even 1 ton
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Old 11-12-2005, 10:04 PM   #4
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Re: Swapping in 3/4 ton axles

Our years are a direct interchange. All of the 73+ fronts are direct as well. 73+ rears need the spring perches moved. I have a 73+ FF 14 bolt in mine.
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Old 11-12-2005, 10:23 PM   #5
ronh72c10
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Re: Swapping in 3/4 ton axles

Thanks! Now I just have to decide if I want to do it.

Ron
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Old 11-12-2005, 10:29 PM   #6
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Re: Swapping in 3/4 ton axles

Quote:
Originally Posted by ronh72c10
Thanks! Now I just have to decide if I want to do it.

Ron

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Old 11-13-2005, 02:25 PM   #7
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Re: Swapping in 3/4 ton axles

Yup!
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Old 11-14-2005, 02:09 PM   #8
Baketown Scotty
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Re: Swapping in 3/4 ton axles

Go for it. I did it, so it must be simple.
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Old 11-14-2005, 02:31 PM   #9
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Re: Swapping in 3/4 ton axles

See http://www.4wheeloffroad.com/howto/3084/
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Old 11-14-2005, 02:39 PM   #10
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Re: Swapping in 3/4 ton axles

IF your going to be running big tires and going off-road a lot, go for it. You may have to make a different driveline (someone correct me if I'm wrong), but everything else should be straight forward. There are a ton of guys on CK5.com running 3/4 & 1 ton gear.
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Old 11-18-2005, 01:01 PM   #11
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Re: Swapping in 3/4 ton axles

The Brake components may also need to be changed, i.e. the Master Cylinder and the proportioning valve. There is a significant weight difference and clearance difference between a 12 bolt and a 14 bolt. If you don't care about that then you will be hard pressed to destroy the 3/4 ton equipment. I would do it if it were me.
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