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U-Joints and FLex couplings.

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Old Aug 22, 2018 | 04:12 AM
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U-Joints and FLex couplings.

Just throwing this out there, I am considering tossing the integrated 4-spd/transfer case in the '79 shorty for a divorsed transfer and a 3.03 long ratio 4-spd I have. to save length I've been considering a flex joint instead of the intermediate shaft from the highboy. Does anyone have any input as to style of flex joint or any negatives about the idea?
 
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Old Aug 22, 2018 | 08:22 PM
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mark a.
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Are you talking about a Joy coupler or what ?
 
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Old Aug 23, 2018 | 05:24 AM
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Originally Posted by mark a.
Are you talking about a Joy coupler or what ?
something on that line, I contacted Lovejoy, and explained what I was after and they said they do not make anything for "automotive use". Not sure if it was an honest answer from a "tech", or just a generic answer from a flunky that tried to look it up on his computer screen.

I'm just trying to eliminate the short shaft, to make the whole unit shorter. I figure the less rear shaft angle the better. I know from experience it isn't a good idea to use a standard U-joint in a straight line because it it can't rotate at an angle it wont lubricate the needles, so they rust and come apart. I guess I could do it with a single u-joint and just grease it frequently, but I was hoping for something that needed less attention.

 
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Old Aug 23, 2018 | 09:23 PM
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It is going to be hard to find or make up anything to match. Either way with a short bed you are going to have to get a steep angle cv and those aren't cheep.
 
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Old Aug 24, 2018 | 06:34 AM
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The way it sits now it's only about a foot longer than the stock setup. I'm trying to research the toploader to see if I can get a shorter tail shaft, but sofar nothing is showing up. If I get stuck using a short intermediate shaft I may be able to lower the transfer case a bit to lessen that angle.
 
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