s15 xpress wrote:No sir the 2wd rear is narrower than the 4x4 rear by 2" and the zr2 rear is a wider than both....are you dealing with the 8.5 rear or the 7.625 rear?
I did some more research and the axle shafts are the same disc or drum. So that eliminates one variable.
Next question is the housing the same for drum or disc. If it is, all I "should' need is the 4 bolt flange backing plate drum setup. My "guess" is that since both the 8.5 and 7.626 both use the 2.75" axle tubes, they should work.
Of course it's pouring rain today and I don't feel like driving 30 miles to look at a blazer that might or might not even have a rear end in it, or might have discs.
Good news it that the driveshaft fit after I installed a 3R to 1310 conversion rear U-joint. I had replaced the harmonic balancer yoke thing that came on the rear with a used one that I bought that was a 1310 style. Sometimes I do get lucky. I knew nothing of the 3R style u joints. 1310, 1330, 1350, yes, 3R, never heard of it. The shaft has 1" of free play. Of course my bro had a 3R 10 8.5 10 bolt yoke sitting on his shelf after he replaced it with a 1310 style to match his Camaro driveshaft that he failed to mention......