Drive shaft

[prodjay10]

I was able to reuse the old driveshaft by swapping out yoke. Only issue is I think it may be a tad too short.

When measuring shaft I inserted new yoke and pulled it out 3/4 of an inch. I measured 56”. The old drive shaft is 55”.

So it’s an inch too short than what I thought I’d need. The yoke is in about 3” to 3.5”.

Is this going to be a problem? I’m not gonna be racing it, but I do expect to drive it frequently and tow cars every now and then.
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[Gregski]

I think you should also tell us if your drive shaft is tapered ie 3" middle with 2 3/4" ends for example, also the material used for the piping may be thinner than what they can make you a new full length 3" one these days (3x.083), and what about the U joints are they the bigger kind, do they have the zirc fittings or not (I hear the non zirc fittings ones are stronger) I bit the bullet and dropped the $300 bucks on a new drive shaft for a piece of mind

not to offend you but was the vehicle sitting flat on the ground when you crawled under it to measure it, you don't know how many times I have seen guys measure with the truck still on jack stands

it's the towing part that concerns me

[prodjay10]

It was on sitting on all fours on a flat surface when I measured. I’m not sure on the rest of the info. I’ll have to look into it.
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[prodjay10]

It’s not tapered at the ends of the drive shaft. It’s 3” shaft all the way back
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[prodjay10]

Zirk fittings.
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[Gregski]

Originally Posted by prodjay10

Zirk fittings.
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cap size for both axis? measure both because you could have what's called a combo joint where two caps are big and the other two are small, ie weaker

2-3011G 3R Series Non Greasable U-Joint (CAP DIAMETER:1.125)

VS

5-1310X Non Greasable U Joint (CAP DIAMETER:1.062)

[prodjay10]

Not sure on that. I’ll have to measure. Thanks for e replies.
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