Click on image for the lowdown. 
====
| | | Forums66 Topics128,205 Posts1,057,429 Members48,471 | | Most Online14,466
Apr 26th, 2026 | | AD Chevy Trucks  Over 6,000 pictures Brad Allen has an awesome collection of Chevrolet factory pictures that he has set up from film strips. Check them out!
Lots of work on Brad's part ... pure enjoyment (and references) for you!
| | THANKS!
For helping keep this great
old truck web site
on the Internet for over 30 years! and not clogged down
with Ads!  Again, thanks!
| | | | Joined: Jul 2015 Posts: 18 New Guy | | New Guy Joined: Jul 2015 Posts: 18 | Hi,
How is rear driveshaft been handled when connecting to 12 bolt rear? Can I just change the U Joint with a univeral type ( I believe its 1310/1330 or do I have to remove the rear driveshaft Pinion Yoke for something other then the stock 3600 Yoke. | | | | | Joined: Jan 2000 Posts: 2,074 'Bolter | | 'Bolter Joined: Jan 2000 Posts: 2,074 | Most shops that can do driveshaft work will have a solution for you. Best of luck. | | | | | Joined: May 2015 Posts: 11,186 Housekeeping (Moderator) Making a Stovebolt Bed & Paint and Body Shop Forums | | Housekeeping (Moderator) Making a Stovebolt Bed & Paint and Body Shop Forums Joined: May 2015 Posts: 11,186 | What he ^ said.
The way they'd go about it is to either change the yoke on the driveshaft to match the rear axle or possibly use a u-joint that's one size on one part of the cross and another size on the other part to match up. You'll likely be messing with the driveshaft anyway, so welding on a new matching yoke isn't that big a deal.
Messing with the yoke on the rear axle potentially introduces issues with bearing preload or pinion seal.
Kevin 1951 Chevy 3100 work truckFollow this saga in Project JournalPhotos 1929 Ford pickup restored from the ground up. | 1929 Ford Special Coupe (First car) Busting rust since the mid-60's If you're smart enough to take it apart, you darn well better be smart enough to put it back together. | | | | | Joined: Mar 2010 Posts: 10,310 Renaissance Man | | Renaissance Man Joined: Mar 2010 Posts: 10,310 | If you get one of those born-to-an-unwed-mother u-joints, do yourself a favor and put the empty box in your glove box so that when it defecates the bed away from home, you will know exactly what you need to replace it.
Carl
1952 5-window - return to "as built" condition | 1950 3100 with a 235 and a T-5 transmission
| | | | | Joined: Feb 2004 Posts: 29,887 Kettle Custodian (pot stirrer) | | Kettle Custodian (pot stirrer) Joined: Feb 2004 Posts: 29,887 | I'd make sure that box also has a brand new U joint in it- - - -chances are having the right part number only and not the part itself is an open invitation to a guy named Murphy along for the ride. "Yeah, we found that part- - - -it's in a warehouse in Hong Kong- - - -be here in about a week!"
Jerry
"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!
| | | | | Joined: Jun 2011 Posts: 5,096 Crusing in the Passing Lane | | Crusing in the Passing Lane Joined: Jun 2011 Posts: 5,096 | I have a binder for each truck, every part I buy, gets the box end with the PN on in that binder.
Ed
'37 GMC T-18 w/ DD 4-53T, RTO-610, 6231 aux., '95 GMC running gear, full disc brakes, power steering, 22.5 wheels and tires.
'47 GMC 1 ton w/ 302, NP-540, 4wd, full width Blazer front axle.
'54 GMC 630 w/ 503 gasser, 5 speed, ex fire truck, shortened WB 4', install 8' bed.
'55 GMC 370 w/270, 420 4 speed, grain, dump bed truck from ND. Works OK.
| | | | | Joined: May 2015 Posts: 11,186 Housekeeping (Moderator) Making a Stovebolt Bed & Paint and Body Shop Forums | | Housekeeping (Moderator) Making a Stovebolt Bed & Paint and Body Shop Forums Joined: May 2015 Posts: 11,186 | That's why putting a matching yoke on the end of the driveshaft is a better solution. U-joint will be a standard size on both ends of the cross. Less likely to need a non-standard, hen's teeth part.
Kevin 1951 Chevy 3100 work truckFollow this saga in Project JournalPhotos 1929 Ford pickup restored from the ground up. | 1929 Ford Special Coupe (First car) Busting rust since the mid-60's If you're smart enough to take it apart, you darn well better be smart enough to put it back together. | | |
|
|
