Guest Danny 70SS Posted February 16, 2010 Share Posted February 16, 2010 I have a 70 SS 454 car that came stock with a 256 posi 12 bolt. I am interested in installing a set of 331 gears(which I don't yet have). I have been told that my 2 series posi carrier can be used if I buy a shim for this purpose from NAPA. Can anyone who has rearend experience (no pun intended) advise if this is true and what all needs to be done to complete the process. Thanks! Danny70SS Quote Link to comment Share on other sites More sharing options...
Mo's70MCs Posted February 16, 2010 Share Posted February 16, 2010 We have a rear end "Guru" His name escapes me right now.. no doubt someone will chime in. Good Luck! Welcome Aboard! Rod Quote Link to comment Share on other sites More sharing options...
Phil Posted February 16, 2010 Share Posted February 16, 2010 I think Rod is talking about the guy that owns this business, he's a member here. If nobody else pipes in here you could email Jim Mitzcke at this website. His screenname here is Monzaz. The website might even have your answer on it, looks like a big site now. http://www.jdrace.com/ or here's his email listed in his profile here. mitschke454@windstream.net Quote Link to comment Share on other sites More sharing options...
Mo's70MCs Posted February 16, 2010 Share Posted February 16, 2010 Maybe we can get the "Web Site Administrator" to add his info into the "Parts and Services" section? That's the guy though! Good going Phil. I looked over the section and couldn't find Jim's name? Quote Link to comment Share on other sites More sharing options...
72MC Posted February 17, 2010 Share Posted February 17, 2010 Yes Monzaz(Jim) is one of the guys who is good with rear ends. I will, however, disagree that ring gear shims are a good idea. IMHO, you are beggin for trouble by using a different series carrier and a ring gear shim. The "rear end guru" that taught me how to setup rear ends told me to "never use a ring gear shim, period". If you are going to go through the trouble of tearing into a rear and changing gears and can't use or afford the correct carrier, don't bother. Your wasting your time. Rear end spec tolerances are so close that the use of a ring gear shim is playing with fire. The other problem is, does the guy doing your work even know how to set up a rear properly to begin with, let alone throwing a ring gear shim into the mix. I know Jim will argue this point with me but, I stand by my "no ring gear shim" stance, just like I don't like "rear wheel hub shims" either. - Dave Quote Link to comment Share on other sites More sharing options...
Sam (Bones) Posted February 17, 2010 Share Posted February 17, 2010 Yes Monzaz(Jim) is one of the guys who is good with rear ends. I will, however, disagree that ring gear shims are a good idea. IMHO, you are beggin for trouble by using a different series carrier and a ring gear shim. The "rear end guru" that taught me how to setup rear ends told me to "never use a ring gear shim, period". If you are going to go through the trouble of tearing into a rear and changing gears and can't use or afford the correct carrier, don't bother. Your wasting your time. Rear end spec tolerances are so close that the use of a ring gear shim is playing with fire. The other problem is, does the guy doing your work even know how to set up a rear properly to begin with, let alone throwing a ring gear shim into the mix. I know Jim will argue this point with me but, I stand by my "no ring gear shim" stance, just like I don't like "rear wheel hub shims" either. - Dave remember the old Fram TV commercial....you can pay me know or you can pay me later BTW....don't use Fram filters either Quote Link to comment Share on other sites More sharing options...
Mike 57 Posted February 17, 2010 Share Posted February 17, 2010 Double Quote Link to comment Share on other sites More sharing options...
7d1hoopd Posted February 18, 2010 Share Posted February 18, 2010 This is a link from the links area that might HELP. Quote Link to comment Share on other sites More sharing options...
Guest Danny 70SS Posted February 20, 2010 Share Posted February 20, 2010 Thanks to everyone for your thoughts on this topic. Quote Link to comment Share on other sites More sharing options...
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