70 Supreme Gear
#1
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
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
#2
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
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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misterthews
Drivetrain/Differentials
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September 14th, 2011 03:20 PM