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August 16th, 2003, 11:55 AM
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#1 (permalink) |
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Junior Member
Join Date: Aug 2003
Location: Lebanon, TN
Posts: 2
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Question:
I have a 1970 Cutlass Supreme with the "o" type 12 bolt differential & and a 2.60 gear. I want to increase that to a 3.42 gear with Posi. Is that possible with off the shelf parts? Anyone with some practical experience who would be willing to post some options, I would appreciate it. Later upgrade will probably include a trans with overdrive. Thank you
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John R. Reed Lebanon, TN 70 Old Cutlass Supreme |
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August 18th, 2003, 07:37 PM
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#2 (permalink) |
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Member
Join Date: Dec 2001
Location: Dallas, Texas
Posts: 32
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It's more likely that you have either the 2.56 or 2.78:1 rear as Olds did not use a 2.60 in 70. There is much debate about the "O" type rear ends. I am no expert in this arena, so I'll refer you here:
Try the Olds FAQ for more info: http://oldsjunction.classicoldsmobil...ential%20Codes And contact Supercars Unlimited. www.SuperCarsUnlimited.com Supercars Unlimited 8029 A SW 17th Portland, OR 97219 PH: (503) 244-8249 FX: (503) 244-9639
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Jeff Herbert (70RagTop) Dallas TX 70 Cutlass Supreme Convertible 68 Cutlass S Convertible 72 Cutlass Supreme Hardtop |
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August 19th, 2003, 05:24 AM
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#3 (permalink) |
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Junior Member
Join Date: Aug 2003
Location: Lebanon, TN
Posts: 2
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Thank you! I have found that confusion as well. It looks like I will need to count splines on my axel to confirm exactly what I can fit in the carrier or if I need a new carrier.
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John R. Reed Lebanon, TN 70 Old Cutlass Supreme |
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