|  rear end and diff suggestions | 
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|  rear end and diff suggestions | 
|  Sep 14 2010, 04:18 AM 
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| newbie Group: Members Posts: 24 Joined: 13-September 10 Member No.: 20,845  | 
				Hey all, new here.  I'm looking for any and all helpful suggestions.  Over the weekend, I broke my pinion on my borg warner in my 89 firebird LT1 running CMC2.  I had been running a 3.45 gear but was considering going to a 10 bolt and a 3.90.   Any suggestions regarding the rear end and differential is appreciated. | 
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|  Sep 22 2010, 06:47 PM 
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| CMCer      Group: Moderators Posts: 2,932 Joined: 12-February 04 From: the sticks near VIR Member No.: 194  | 
				I know it is allowed to have 4th gen rears now in 3rd gen cars as they made me take one out when it wasn't! I helped get that rule changed - economical racing and parts was a good part of the argument, also that using 4th gen wheels makes it all good with the track width. This rule has been in place for many years without dispute to my knowledge.
				
				
				
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 wastntim   rear end and diff suggestions   Sep 14 2010, 04:18 AM
 wastntim   rear end and diff suggestions   Sep 14 2010, 04:18 AM 
  ReEntryRacer   QUOTE (wastntim @ Sep 13 2010, 09:18 PM) ...   Sep 16 2010, 05:42 AM
 ReEntryRacer   QUOTE (wastntim @ Sep 13 2010, 09:18 PM) ...   Sep 16 2010, 05:42 AM
 
  Sidney   QUOTE (ReEntryRacer @ Sep 16 2010, 12:42 ...   Sep 17 2010, 05:36 PM
 Sidney   QUOTE (ReEntryRacer @ Sep 16 2010, 12:42 ...   Sep 17 2010, 05:36 PM

 
  nape   QUOTE (Sidney @ Sep 17 2010, 12:36 PM) Ro...   Sep 22 2010, 01:50 AM
 nape   QUOTE (Sidney @ Sep 17 2010, 12:36 PM) Ro...   Sep 22 2010, 01:50 AM 
  trackbird   QUOTE 7.29.2 Both GM and Ford cars may also use a ...   Sep 22 2010, 03:37 PM
 trackbird   QUOTE 7.29.2 Both GM and Ford cars may also use a ...   Sep 22 2010, 03:37 PM 
  nape   7.29.1 should allow the update/backdate across the...   Sep 22 2010, 06:24 PM
 nape   7.29.1 should allow the update/backdate across the...   Sep 22 2010, 06:24 PM 
  GlennCMC70   It is a legal swap. 
The question was asked about ...   Sep 22 2010, 11:24 PM
 GlennCMC70   It is a legal swap. 
The question was asked about ...   Sep 22 2010, 11:24 PM 
  StanIROCZ   I'd do a 4th gen rear and avoid the wheel spac...   Sep 23 2010, 04:21 AM
 StanIROCZ   I'd do a 4th gen rear and avoid the wheel spac...   Sep 23 2010, 04:21 AM|   | 
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