71 MONTE 4 YA Posted October 6, 2010 Share Posted October 6, 2010 Can I make my existing non posi 12 bolt into posi? If so what will I need? Thanks.. Rodney Quote Link to comment Share on other sites More sharing options...
Sam (Bones) Posted October 6, 2010 Share Posted October 6, 2010 yes, a new carrier unit (the thing the ring gear bolts too) Quote Link to comment Share on other sites More sharing options...
Grease Posted October 6, 2010 Share Posted October 6, 2010 You can convert your original carrier to Posi by adding a PowerTrax unit . This replaces the spider gears . Here is a link to some info at summit , though its available at other sources. I do not have one and can not give a recommendation of it . http://www.summitracing.com/search/Brand...s/?autoview=SKU Quote Link to comment Share on other sites More sharing options...
monte70car Posted October 6, 2010 Share Posted October 6, 2010 I have one in my 12 bolt works great and is easy to put in. It works like a posi-track, it only locks up when you get on it going around corners it disengages. Quote Link to comment Share on other sites More sharing options...
Winston Wolf Posted October 6, 2010 Share Posted October 6, 2010 You can convert your original carrier to Posi by adding a PowerTrax unit . This replaces the spider gears . Here is a link to some info at summit , though its available at other sources. I do not have one and can not give a recommendation of it . http://www.summitracing.com/search/Brand...s/?autoview=SKU Â For the price of that Powertrax, you could just buy a Eaton or Moroso carrier, and step up to a 4 series right away for when you ultimately get lower gears... Quote Link to comment Share on other sites More sharing options...
Ian Posted October 6, 2010 Share Posted October 6, 2010 I went with a Eaton and 3.42's and love it. Can't wait to put my 700R4 in Quote Link to comment Share on other sites More sharing options...
Chevyss Posted October 8, 2010 Share Posted October 8, 2010 Alburn posi, w/richmond gears. (3:73 and love it. Works good. Better with the 400 than with the 700R4. Quote Link to comment Share on other sites More sharing options...
201fireman Posted October 14, 2010 Share Posted October 14, 2010 I have a 12 bolt open with 2:73 gears. I have a chance to buy a posi carrier and a ring/pinion gear set (3:55) for $250. Is this worth it and will it go in with my stock axles? Quote Link to comment Share on other sites More sharing options...
Mike 57 Posted October 14, 2010 Share Posted October 14, 2010 New gears 160 and up New posi 400 and up New Math says it is worth it if it is not damaged. Should be 30 spline axels Quote Link to comment Share on other sites More sharing options...
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