Hey H.A.M.B., I’m trying to piece together my 54 Chevy project and ran into some unknowns I’m struggling to identify. My main question is: Is this a 1310 style diff yoke? Or how can I tell? It has locating tabs and they are about 3.22-3.23 inches apart. There is not a groove for snap rings. The rear end is a GM 8.5” 10 bolt. Based on the code JB G230 I believe it to be a 1972 or 1975 car rearend. The gearing seems to match at 2.73 When I bought the car it had this rearend but had a Buick 300 with an auto trans. The engine was seized so I got a 350 SBC and a Saginaw 4 speed. I bought a 1310 slip yoke to mate with the Saginaw but now that I’m at the point of having the driveshaft cut down I’m realizing that the U-joints on the shaft don’t match a 1310 style. I’m now planning to go get a 1310 style driveshaft from the junkyard but I’m not sure if I would have to change the pinion yoke or possibly use a combination style U-joint. I’m hoping that the pinion yoke is a 1310 style and I can just get a driveshaft to match so I don’t have oddball U-Joints. For what it’s worth, the drive shaft has inside C-clips on the U-joints and was installed on the Buick auto trans. I think it’s possible that someone mismatched the rear U-joint. The car came out of a pasture and I don’t know if it was on the road with the Buick drivetrain. Any suggestions are appreciated! Here’s the driveshaft. Sent from my iPad using H.A.M.B.
Look here ..... a pair of calipers helps .... The measurements are far enough apart ya only need to get close https://www.dennysdriveshaft.com/c130_universal_joints_.html Ricky.
A 8.5 10 bolt rear end should be a s44 also called r3? U joint. Fits most gm cars from the 60 s to the 90s I think
Use a caliper to measure accurately, both diameter and length, or buy a 1310 U joint and see how it fits the yoke. Here is a pretty comprehensive list of U joints by size, might help once you have accurate dimensions of both U joints. https://www.moog-suspension-parts.com/universal-joints-ujoints.asp
Grabis, I work in a driveline shop. Your differential yoke IS a 1310 series. Your driveshaft is a GM 3R series. From experience, I can tell just by looking at your pictures. You can get a conversion u-joint to mate your driveshaft up to your pinion yoke. Spice part number 5-3022X is what you need. I hope this helps you. Cam
You're missing a couple caps on that rear u-joint from the looks of it. You wouldn't need clips on the rear pinion yoke, those tabs keep the caps from coming off the u-joint and keep it centered in the yoke; all you need are some caps and some u-bolts. Oh, and u-joints that aren't square are called "bastard joints" and there's lots of them. A parts store where you know the guy behind the counter will have a book you can look through to get exactly what you need, though I'd start with what 78Magnum said up above.
Guys, Thank you for the responses. I was out in the garage last night with the Denny’s Driveline info measuring my parts (car) with a caliper and the 1310 seemed to fit the diff yoke. 3R looked like my driveshaft u-joints. Wanted some confirmation from folks with more experience than me. As usual, I now have a lot more info than I started with!!!! Thanks Guys! Sent from my iPhone using H.A.M.B.
Cam, This is exactly what I was hoping for, someone with daily experience to kick me in the right direction. I hadn’t removed any of the 3R joints yet so my measuring was a little limited. The rear joint caps disappeared when I removed the shaft back in 2015. Looks like I have two good options. Since the shaft needs to be shortened I can have that done and use conversion u-joints at both ends or try to find a 1310 style driveshaft in the boneyard, with any luck, the correct length. Thanks Man!!! Travis Sent from my iPhone using H.A.M.B.