• When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.

Combo u joint

Gregg DeGeorge

Well-Known Member
Local time
5:26 PM
Joined
Oct 17, 2017
Messages
242
Reaction score
45
Location
Naugatuck Ct 06770
Hello all ,putting drivetrain in a 70 Roadrunner anyway I have the big block drive shaft it has the large u joint both ends looking for a combo joint my center section probably from a a body has the small yoke it’s a 42 case ,anyone know what u joint I need thought it was 347 that’s not wide enough thanks Gregg
 
I don’t know, but maybe you could consider changing the yoke on the Center section? Then you can keep the integrity of the large u-joint shaft intact..
 
Is this what you are looking for?
1350 to 7290 Conversion U-Joint

1350-7290-conversion.jpg





https://www.doctordiff.com/1350-to-7290-conversion-u-joint.html
 
You probably need a 7260 to a 7290 joint. I’ve heard Dr Diff has them available. He is a great and helpful vendor for us mopar folks!
 
Thanks for the info I know I bought one these at NAPA wasn’t even two years ago just forgot the number thanks again
 
I believe the 347 is for the 7260/7290 conversion
 
Hello all ,putting drivetrain in a 70 Roadrunner anyway I have the big block drive shaft it has the large u joint both ends looking for a combo joint my center section probably from a a body has the small yoke it’s a 42 case ,anyone know what u joint I need thought it was 347 that’s not wide enough thanks Gregg

7260 small to 7290 large u-joint -- Spicer # 5-527X ---- TRW ( Federal-Mogul ) # 20226 ---- Precision ( Moog ) # 347
Denny's Driveshafts has what you need.
 
Look up Spicer online. They have charts with sizes ear to ear and all sorts of different combinations.
 
Ok I bought thev7260;7290;fit drive shaft fine but wasn’t wide enough for my pinion flange it measures 31/4 wide I need 31/2wide diameter of u joint is fine just not wide enough ?.So I must need 1330/7290 ??
 
Cup size on 1330 is 1.0625 and is 3 5/8 wide. The yoke for a 1330 has two small tabs on outside of where cups mount. Note tab where cup mounts. If no tab on yoke pot a pic of yoke measure diameter of
u1330 1.JPG
cup.
u1330 1.JPG
 
Cup size on 1330 is 1.0625 and is 3 5/8 wide. The yoke for a 1330 has two small tabs on outside of where cups mount. Note tab where cup mounts. If no tab on yoke pot a pic of yoke measure diameter of View attachment 911114 cup.View attachment 911114
Thanks I bought the wrong joint again maybe third time the charm 1330 seems to be the right width ,the other combo joint cup size was fine but not wide enough illl give it another try
 
1330 7290 and 1350 are the same width it's the cup size that's different.
 
Last edited:
It will be either a 1330/7290 conversion, or a 7260/7290 conversion.

The 1330/7290 cross is actually the same cross as the 7290/7290. Only the caps are different.
Thanks I bought the wrong joint again maybe third time the charm 1330 seems to be the right width ,the other combo joint cup size was fine but not wide enough illl give it another try

Are you SURE that the 7260 cup fit? The 1330 and 7260 cups are different sizes.
 
Auto Transport Service
Back
Top