Quote Originally Posted by jerry clayton
Dave

the angle to the world/ground referance means nothing----the relative angle of the trans output shaft/drive shaft /pinion shaft are the angles that matter---perfectly straight with each other on causes u joint wear as the needles don't rotate, whereas too much angle causes vibration----the desired u joint angles can also be obtained by horizontal(sideways) shifting of engine/trans or rear differentials---on your C4 rear this wouldn't be easy---

Something new might be to use one of the new type driveshaft couplers that are on the new GTO, Mopar hemi or Ford Mustangs
Jerry,

Unfortunately, the C4 is offset nearly an inch....and I have no more room to move transmission over to correct for it. I also have no way of figuring out the measurement on a horizontal plane without knowing exactly where the crank/output shaft center line is....maybe an laser of some sort. Hmmm. Am I being too picky? Are the GTO, Mustangs your talking about using a sort of double cardin design? Or a split shaft? I tried to do a search to see what you were talking about.

Thanks,
Dave