im getting ready to mini tub my 1983 camaro using 8.5" ten bolt . i mesured one on cam it was 55"back plate to back plate i mesured one under 73 nova was 53" plate toplate ialso have one out of 72 camaro it was 54" plate to plate 12 bolts should be same on these cars

 

punctuation, spelling and grammar please.

you are talking about 10 bolts and 12 bolts, of course they will be a little different. Also depends on brakes.

how are you planning to use the 8.5" rear? how are you going to attach the torque arm?

 

right now thinking ladder bars got any ideas for torque arm mount grammer spelling not my best

 

but at least i could read that sentence.

ladder bars work, but you have to cut up the floor too and loose the back seats. Is it a track only car? of a street strip car?

a moser housing and axle package, even for the cost of about 1k, is still worth it when considering the fabrication and aggravation of making a non complaint rear fit the car. It will be stronger too, and whatever width you ant ti to be, shipped to your door.

 

If you find one of those old 12 bolts, sell it and buy an aftermarket bolt in diff for a third gen and probably still have money left over. Those old 12 bolts are getting very hard to find.

 

i missed that. If you have a 2nd gen 12 bolt, it can be worth big bucks, more if its early date coded

look into selling the 12 bolt, it may pay for the moser 9, and then some perhaps.

 

luckily only have two 8.5 ten bolts