Re: Rearend Decode?
I'm not sure what you mean by left axle tube, but if you mean driver's side, that's not where my 12 bolt is marked. My 12 bolt decoded "CI" from a 66-68 Chevelle. It is marked on the passenger side axle tube, on the driveshaft/pinion side of the tube. Mine was pretty difficult to see, as the stamping was no where near as deep a stamping as the one pictured here. I had to use a 220 girt sandpaper , then wash it with thinner to find the marks. It was early on after I bought this 72 parts car, and before I popped the cover. Pleasant surprise- decoded as a 3:73 gear with posi-traction- verified later after opening it up. Very happy to put it in my 71!