I bought this narrowed 12 bolt (type3) and have been running it for 5 years in a 12 sec car without issue. I figure this is a mistake when it was narrowed. It's 3/4" of difference side to side. Kind of remember the rear being difficult to install when it came to the lower arms.. Thoughts appreciated...
What's your question? One side is 3/4 longer? Does it have bolt in axle ends or c clip Elim? Pull it,..square it up,..put new end/s ,..new or resplined axles and go The shock pad needs to be flipped to the inside
Was it narrowed or was it a 67-older that is 5/8” narrower on each side? When I narrow all of mine,I relocate the shock mount directly behind the lower control arm. This allows better wheel clearance,but more importantly,it takes some angle off the shock for it to function better and results in better 60fts. I make a vertical slice up the shock mount,to remove it from the housing. When I re-install,the LH goes on the right and the RH goes on the left. I also do this because you need room to weld the housing end on,but it only makes sense to improve what is there. If you look at an Moser housing,and some other newer housings,they do the same thing. They locate the shock mount directly behind the lower control arm. Some look just like a G-body mount.
Is the right side shorter than the left? As far as I know, GM rwd vehicles have the entire driveline 1/2" offset to the right which makes the left axle tube 1" longer than the right. If the engine is in the stock location and the pinion is centered in the differential, the driveshaft would be off center through the transmission tunnel. Maybe the person that narrowed the housing was shooting for the 1/2"and was a little off when measuring or when it was welded because 3/4" difference left to right makes the offset 3/8".
Correct, the axles are the same (on a GM), but the axle tubes are different lengths. On my narrowed 9" Ford, the axle tubes and shafts are different lengths.
