U JOINTS

[downsr]

I have a 340 duster with the original u joints .Is there an upgrade to a stronger u joint or could someone possible have a part number.Auto parts stores seem to have a hard time looking them up.The differential is a 83/4 741 case 391 gears

 

[mguner]

If it is the smaller joints the 317 is a good choice as it has a zerk on the cap and is easy to grease. It crosses over to several numbers but Precision and Master Pro use that number.

 

[mguner]

If by some chance you have the larger joints the Spicer Part # 5-1309X should be it.

 

[downsr]

How can i tell what joints i have

 

[Frank Mopar]

Stronger U-joints are the non greaseable ones.

 

[tinman2]

If you do use a u-joint with a grease fitting, try to install it so the fitting (weak area) is under compression when accelerating and not under tension.