pocobill7t1 Posted March 28, 2014 Share Posted March 28, 2014 Hi guys I have a stock 12 bolt rear end non posi. Stk gears etc, can I install a posi unit without changing the axels etc. what's involved Quote Link to comment Share on other sites More sharing options...
Mike 57 Posted March 28, 2014 Share Posted March 28, 2014 Purchase the unit and have it installed. Everything will interchange. I would suggest new bearings but the shims should be he same. Make sure you get the right series carrier to match your gear ratio. What gear ratio do you have? I don't know if a 2 series posi carrier is available. 3 Series works with 3.08 to 3.90 Quote Link to comment Share on other sites More sharing options...
70 Iron Posted March 28, 2014 Share Posted March 28, 2014 Mike's correct about finding a new 2 series unit,I tried about 3 yrs ago to get one for the stock 273's 12 bolt but he did have a rebuit 2 series so I bought it, also the side bearings/races . Quite simple to install just keep your shims /bearing caps on the side they came off.Check your axles for a wear groove at the bearing area.You may start that snowball thingy Quote Link to comment Share on other sites More sharing options...
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