1991 v2500 rear driveshaft length

[orskier]

I'm looking for someone with a truck like mine to help out by measuring their rear driveshaft. I'm in the middle of an engine swap and while I have it all apart I took the shafts in to the local expert shop to have them rebuilt and balanced. Did NOT anticipate the guy saying "hey, are you sure this is the correct shaft"? Looking at the slip yoke, he said it looks like it's not going into the transfer case far enough (only about 1/2 of it is shiny from being inside the seal).

I have a 1991 3/4 ton 4wd, 350, and 4L80E - which I thought was bone stock. (I bought it surplus from the State of OR about 15 years ago and have never modified it before).

If you've got one of these, would you be so kind as to measure the length from u-joint to u-joint, and also from u-joint to rear seal of the transfer case? If by any chance you've got it out of the vehicle I could ask for more dimensions, but asking to take it out would be going too far! :O

Thanks,
Scott

 

[Charlie]

 

[RetroC10Sport]

48.99"

 

[Daveo91Burb]

I’ve got what you’ve got and I’ll try and remember tonight to measure. But it’s in the vehicle. I think yours is stock though - it sounds like what mine looks like with about 1/2” to 1” of shine.

 

[orskier]

48.99"

Thanks RetroC10Sport,

Confirming that's ujoint center to ujoint center.

Can you tell me how many inches from front ujoint to transfer case seal?

 

[highdesertrange]

the driveshaft guy will be able to tell you where to measure. point A to point B and then he can measure your shaft and tell you if it's the right length. highdesertranger

 

[yevgenievich]

Mine seem to measure 49 1/8.
53 7/8 from center of rear u joint to transfer case
Stock 91 v2500

 

[Daveo91Burb]

Sorry it took so long, but I finally was able to get some measurements tonight. I'm at 49" or so just like the other two. Front is 28.5" I also have a driveshaft sitting in my shop from a '90 4x4 burb with TH400 - it's measuring out at 50 3/4"

 

[orskier]

Thanks all - you've confirmed that my shaft is stock, and it's undergoing its rebuild now.