Originally Posted by tsorens
Does anyone know what rear end chevy used in the 83-88 Monte SS? Posi? Gear Ratio? Got one thats bad and would like to find another from the junk yard instead of having this one rebuilt. Surely they are not the same as the non-SS montes? Would any of the Camaro rears be the same?
All g bodies, Impala SS's, S 10;s, S 10 Blazer's, Astro's and Camaros used a 10 bolt 7.625 in rear end. The carrier and pinion can be interchanged. They will fit from one axle housing to another. There are 2 carriers, one fits up to 308 and the other from 3.23 up. There are 2 axles 26 spline and 28. The axle lengths are different from one model to another. The gear ratio is stamped on the ring gear, i.e. 12-41 , 3.42 which is the most common in S-10 PU's and S-10 Blazers With 4.3 and a 700 R-4. On the production decal GT-4 is 3.42, GT-5 is 3.73, etc. G-80 is limited slip. You will have to count the splines. These are from the early 80s to mid 90s. You can order axles from Summit or cut down longer axles. Hope this helps. Grand Nationals and Hurst 350 Olds used an 8.5 rear end.