raceking46 Posted May 6, 2012 Share Posted May 6, 2012 trying to rebuild my rearend. Its an 8.2 10 bolt and i'm having nothing but trouble. bought a posi unit on ebay wrong size ring gear bolt holes. bought a bearing kit for 8.2 and the shims aren't right and neither are the pinion seal or nut. I bought the chevy stuff not the BOP so I'm not sure what the issue is here unless someone put a BOP 8.2 in my car b4 I got it. Quote Link to comment Share on other sites More sharing options...
Andreas Posted May 6, 2012 Share Posted May 6, 2012 Get a 12 bolt... Quote Link to comment Share on other sites More sharing options...
AL M Posted May 7, 2012 Share Posted May 7, 2012 My car has the BOP rear and it came from the factory w/it....its even on my build sheet....pricey to overhaul but strong...Mines doing fine behind my big cubed small block so far. Quote Link to comment Share on other sites More sharing options...
raceking46 Posted May 7, 2012 Author Share Posted May 7, 2012 i don't know how to tell the difference. Does the BOP have the axle bearings pressed on the axles cuz mine does and the ring gear bolts are 7/16 left hand thread. Quote Link to comment Share on other sites More sharing options...
MGD72Monte Posted May 7, 2012 Share Posted May 7, 2012 I'm rebuilding my chevy 10 bolt 8.2" rear end. I'm by no means a Buick Olds Pontiac read end expert, but I ran accross a thread linky that talks about the differences between the BOP and chevy rear end 10 bolts. Hopefully it can help you. Good luck. Quote Link to comment Share on other sites More sharing options...
geartech Posted May 7, 2012 Share Posted May 7, 2012 Yes, if your axle bearings are pressed on (not a c-clip rear) then you have a BOP rear. In 1969 (I think) the BOP rear changed ring gear bolt sizes. I had a 69 Lemans some time ago, and I had that posi carrier vs ring gear bolt size problem. Chevrolet did put those in Monte's for some reason from the factory as other people have pointed out. Do you have the casting number from the axle housing? Or pictures? Quote Link to comment Share on other sites More sharing options...
70mcarlo Posted May 7, 2012 Share Posted May 7, 2012 Here's another site that my help (just click the Differential I.D. tab). http://www.jdrace.com/ Quote Link to comment Share on other sites More sharing options...
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