i have installed a 4l80 in my 06 rcsb now i cant find the right U-Joint to fit my stock driveshaft and the stock 4l80 yoke I understand i need a conversion ujoint but which one exactly and where do i buy???
-i tried precision 447 and didnt work because the caps are the same i need one that has a shorter side for my stock ds and a longer one for the stock 4l80 yoke

the yoke says spicer on it and was removed from a 2 piece 2500 driveshaft from the same truck the 4l80 came from idk if that helps any help is appreciated

 

U-Joint series identification

Most likely a 1350 series on the 4L80E yoke. Possibly a 3R on the truck.

 

i will have to measure tomorrow and lets say it is a 1350 and a 3R so i would ask for a 1350 to 3R conversion ujoint??? where can i buy something like that??? autoparts stores, napa, pep boys???

 

Yeah,
The problem is that most parts guys these days don't know how to look that up and the numbers may not cross for them.

They have them at Autozone, Napa, Oreilllys, etc.

 

yesterday i went to oriellys and advance and they didnt have them i even went in with a employee of advance auto parts to check mostly all of the ones they had in stock and nothing ill try autozone and napa tomorrow

 

The employees at those stores don't know an alternator from a spare tire, at least the ones I've dealt with in my area. They might carry the part you need, but they will only be able to find it if you give them the part number. As Jake said, they aren't very good at cross referencing numbers. They only know what computer tells them.

Unfortunately I don't know what part you need, but you will likely have to get it online. I got my u-joint and slip yoke from Denny's and had them a week later. eBay would be faster probably.

Perhaps find some dimensions online of the various types of u-joints. I'm guessing you need 1350 or 3R, or a combination of the two as Jake suggested.

 

Since I no longer work at the parts store I can't find the online version of the book I need. From what I can tell you need a combination of 330 and 534g.