Driveshaft too short?

[Bonshee1971]

I just swapped the 4in. rough country lift kit from my 79 K5 to my 91 K5 and my driveshaft looks like its too short. It is a one piece unit and the yoke looks like its sticking out of the tailshaft too far. It still drives and seems to function correctly but im worried that if I do much wheelin in it, it will pull out of the tailshaft. Should I go with a two piece shaft or just have a longer one piece shaft made? Or will this one work the way it is?

 

[habitatxskate]

how much of the yoke is out of the housing? if you want measure the dimensions and pm em to me and ill measure mine.

 

[Thunder]

When i did a 4" lift on my 89 I just went and had a new drive shaft made. Altho I really didn't need one it seemed like there was not enough of the yoke on the splines, it was a sloppy fit. I had a longer shaft made out DOM tubing which is lighter and stronger than the stock shaft. Worked out good and got rid of a vibration I had at 40-55 MPH.

 

[Bonshee1971]

there is roughly 6 in. or so of the yoke sticking out of the housing. I might just go and have a longer one made. How much was the DOM shaft compared to a standard one?

 

[lochenjons]

Sqaure tube dshaft all the way man! Cost me about $35 and I have a massive amount of slip. Made for my 52" swap, your dshaft shouldnt be too short with just a 4" lift but I could be wrong

 

[Bonshee1971]

That looks awesome and the price is right but i have a one piece driveshaft so the output shaft on the transfer case is wrong. I could use square tube for a one piece shaft though. What thickness is it and is it stronger being square than a round shaft would be?

 

[1978Blazerk5]

How are those square shafts with regualar driving. Had to ask always been curious

 

[vortec]

How are those square shafts with regualar driving. Had to ask always been curious

shouldn't make a difference in 2wd, since that's a front driveshaft

What thickness is it and is it stronger being square than a round shaft would be?

i think thickness is the key there. i think that geometrically speaking, a cylinder should be stronger than a square tube, assuming equal metal thickness, because the force spreads equally instead of having pointed and flat spots to concentrate.

 

[sta500666]

shouldn't make a difference in 2wd, since that's a front driveshaft



i think thickness is the key there. i think that geometrically speaking, a cylinder should be stronger than a square tube, assuming equal metal thickness, because the force spreads equally instead of having pointed and flat spots to concentrate.

Your right on, a cylinder is stronger! However if a cylindrical drive shaft was solid then it would be weaker, but they arn't. The only geometric shape stronger than a cylinder is a triangle, that is a hollow triangle. Someone should make one of those!

 

[1978Blazerk5]

shouldn't make a difference in 2wd, since that's a front driveshaft

I totaly missed That