65 cutlass 3:55 differential

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Old Dec 18, 2019 | 06:11 PM
  #1  
Gpc1's Avatar
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65 cutlass 3:55 differential

Car has 3:08 gears now would like to find a 3:55 in good shape
thanks
i am located in Northern California
SF bay area

Last edited by Gpc1; Dec 19, 2019 at 04:53 PM.
Old Dec 18, 2019 | 06:24 PM
  #2  
Gerald Nickels's Avatar
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From: Nor Cal
You might want to list your city and state.
Gerald
Old Dec 18, 2019 | 06:44 PM
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Originally Posted by Gpc1
Car has 3:08 gears now would like to find a 3:55 in good shape
thanks
i am located in Northern California
Originally Posted by Gerald Nickels
You might want to list your city and state.
Gerald
Well....that covers San Jose to Hornbrook (had to look that one up) and anything in between....hence the city is needed.
Old Dec 19, 2019 | 04:57 PM
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Originally Posted by svnt442
Well....that covers San Jose to Hornbrook (had to look that one up) and anything in between....hence the city is needed.
SF Bay Area , east bay
thanks
Old Jan 3, 2020 | 07:04 PM
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5765's Avatar
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I have a complete 65 442 rear with 3.23 gears and heavy duty brakes.
Old Jan 4, 2020 | 05:48 AM
  #6  
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Originally Posted by 5765
I have a complete 65 442 rear with 3.23 gears and heavy duty brakes.
Thanks, but a 3:23 wouldn’t do me much good. I’m probably going to have to get a gear set and change over.
i have never done a gear change so I was hoping to find a complete rear end I could just swap out.
Thanks all
Old Jan 4, 2020 | 07:58 AM
  #7  
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From: Birmingham,Alabama
Originally Posted by Gpc1
Thanks, but a 3:23 wouldn’t do me much good. I’m probably going to have to get a gear set and change over.
i have never done a gear change so I was hoping to find a complete rear end I could just swap out.
Thanks all
I have a very nice used OEM 3.55 gear set and posi unit I will sell. This is for the 8.2 B/P axle and will fit your housing. Contact me @ pchopesq@aol.com
Old Jan 4, 2020 | 08:35 AM
  #8  
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Originally Posted by 66-3X2 442
I have a very nice used OEM 3.55 gear set and posi unit I will sell. This is for the 8.2 B/P axle and will fit your housing. Contact me @ pchopesq@aol.com
Doesn’t need to be a posi . Email sent
Old Jan 4, 2020 | 10:59 AM
  #9  
66-3X2 442's Avatar
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Originally Posted by Gpc1
Thanks, but a 3:23 wouldn’t do me much good. I’m probably going to have to get a gear set and change over.
i have never done a gear change so I was hoping to find a complete rear end I could just swap out.
Thanks all
If you can't set the gear set up correctly,finding a complete rear axle is your best choice. The problem is,the 64/65 rear axles are narrower than the 66/67 units. It's not a huge difference but still a difference. You might find a good reputable mechanic in your area who can do the gear change. Good Luck.
Old Jan 4, 2020 | 11:32 AM
  #10  
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Yes, a complete rear end would be a lot easier and something I’m comfortable doing as I have done so a few times in my day. I know the axles are slightly longer on 66-67, years ago I replaced my blown posi rear on a 65 I had then, with one from a 66 out of a junkyard
Old Jan 6, 2020 | 06:32 AM
  #11  
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l have a rebuilt 67 3:55 posi. In Redmond, Oregon

Larry
lemoldsnut@aol.com
541-815-4363

Email direct or call
Old Jan 6, 2020 | 08:35 AM
  #12  
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I used Gear Works in San Lorenzo to swap my peg leg highway gears 8.2 with a 3.55 posi. It was about 10 years ago but his prices were reasonable and he did great work. Might be an option if you can’t find a complete rear end.
Old Jan 6, 2020 | 08:42 AM
  #13  
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Originally Posted by 4speed455
I used Gear Works in San Lorenzo to swap my peg leg highway gears 8.2 with a 3.55 posi. It was about 10 years ago but his prices were reasonable and he did great work. Might be an option if you can’t find a complete rear end.
Great info and not too far away Thanks!
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