Need Upgraded U-Joints!
 

So, my 406 is systematically going through my U-joints. This is the second time in less than 3k miles that I've snapped a U-joint. I was looking at the Precision U-joints, but it shows that I have two different diameters on this year truck.

Anyone know what the correct sizes are for our year trucks? It is a '71 C-10 with the TH350 and GM 12 bolt. Thanks for the help.

Re: Need Upgraded U-Joints!
 

Maybe an OX? Available for Dana 30/44 and GM 10 bolt, Part #: OX297X and lists for about $150.

http://www.offroaders.com/directory/...x-u-joints.htm