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Old 11-26-2004, 03:02 PM   #11
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All SSEi'* with the 4T60E are a 2.97 ratio. This is tough when you're looking for a good core to build a new transmission. Only 5.000 or fewer Bonnevelles got this trans ratio each year. Not sure what other cars got it, but they're rarer.

All NA Bonnevilles with the 4T60 (through 1996) have a 3.06 ratio. More common, but different than the typical Buick. Most Buick LeSabre'* for instance, had the 2.84 ratio.

Not sure what your trans ratio is. jr's3800, Padgett, or Ol' Timer would be the guys to know. They'll know off the tops of their heads without needing to know your RPO codes.
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Old 11-26-2004, 03:53 PM   #12
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I have several to choose from. I don't feel like looking them up, but I think there are two, but there are different 1st 2nd 3rd and 4th gear ratios, depending on the revision of the TH-440. But, anyways, that'* another thing. I think there are only 2 for '89. 3 in '91 with the GX3. Just testing you, Bill


-justin
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Old 11-26-2004, 04:01 PM   #13
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My Cutlass (4T60E) is 3.33 compared to my Bonne which was 3.06. I noticed a big difference between the two from the beginning. Of course it'* a totally different engine too.
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Old 11-26-2004, 06:17 PM   #14
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LOL, I bet Will has esp or whatever it is. He'* starting to freak me out a little. LOL just kidding Will.
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Old 11-26-2004, 06:42 PM   #15
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Quote:
Originally Posted by opensourceguy
I have several to choose from. I don't feel like looking them up, but I think there are two, but there are different 1st 2nd 3rd and 4th gear ratios, depending on the revision of the TH-440. But, anyways, that'* another thing. I think there are only 2 for '89. 3 in '91 with the GX3. Just testing you, Bill


-justin
You probably have the 2.97.
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Old 11-26-2004, 07:29 PM   #16
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Quote:
Originally Posted by willwren
You're 3.06
Oh- OH!!!! WRONG!!!!!!!!
M15= 3.05.
1997 was the last year for the 3.06 gearing in the H-bodies.
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Old 11-26-2004, 07:31 PM   #17
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Quote:
Originally Posted by OLBlueEyesBonne
Quote:
Originally Posted by willwren
You're 3.06
Oh- OH!!!! WRONG!!!!!!!!
M15= 3.05.
1997 was the last year for the 3.06 gearing in the H-bodies.
That'* right, scould him for the .1 he'* off on ratio Marty....lol
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