 rear end and diff suggestions |
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 Sep 14 2010, 04:18 AM
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#1
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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, 11:24 PM
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#2
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Veteran Member  Group: Member Posts: 2,688 Joined: 23-December 03 From: Ft Worth, TX Member No.: 8 |
It is a legal swap.
The question was asked about the increase in track width. No matter what rear you use, the wheels/tires must remain inside the fenders per the CMC rules. So you would likely have to use 4th gen offset wheels. I would think that a 4th gen 10 bolt will be heavier than the 3rd gen 10 bolt since the 4th gen would be wider. Longer axles, and axle tubes equals more weight. The wheels don't factor at all since the change in offset of the wheel does not add or subtract weight. If it was me, I would use a 10 bolt since its plenty strong for CMC use. |
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Posts in this topic
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
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 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 CMC #37 I know it is allowed to have 4th gen rears now in ... Sep 22 2010, 06:47 PM StanIROCZ I'd do a 4th gen rear and avoid the wheel spac... Sep 23 2010, 04:21 AM |
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