Sloppy slip yokes

Sloppy slip yokes

Personally I always have a custom Driveline and U-joints made and balanced for all the obvious reasons. Besides it's in my opinion they're reasonably affordable for what you get, but like you are pointing out about mixing parts and sometimes that's where a pinion angle can get out sometimes also. My first clue was a 360 didn't come in a 1970 duster I don't think?

rustycowll69 said
my first thought was insufficient slip yoke engagement in the back of the transmission. I don't think you should have more than 3/4" of slip yoke hanging out from completely bottomed out. Sometimes when swapping engines, transmissions, rear axles people get a little careless or too frugal trying to make a driveshaft they have work, instead of getting the correct length, or having a custom driveshaft made for them.