Tranny interchangeability - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


1992-1999 Series I L27 (1992-1994 SE,SLE, SSE) & Series II L36 (1995-1999 SE, SSE, SLE) and common problems for the Series I and II L67 (all supercharged models 92-99) Including Olds 88's, Olds LSS's and Buick Lesabres Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

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Old 12-23-2004, 05:19 PM   #1
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Default Tranny interchangeability

I have a 93 ssei with the 4t60E with traction control and performance shift. The tranny is shot and I have a 93 olds 98 parts car with the same tranny(minus the traction control and performance shift features) The tranny shops are telling me that it will not work because of the traction control and perf shift. The gm dealers are telling me it will work as long as I use the electronics from my tranny. Anybody with some experience on this subject your help would be greatly appreciated.also the olds 98 is not supercharged and both trannies have the same final drive ratio. Thanx in advance!!!
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Old 12-23-2004, 06:06 PM   #2
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your SSEI has the 4T60-E HD version, you could use the olds one but it isnt as strong as the HD version, and the Superchaged torque will frag that olds one, not today and maybe not tomarrow, but soon enough

and the Perf/normal buttons are controlled by the PCM ot change the shift points of the car
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Old 12-23-2004, 06:34 PM   #3
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If your in a bind, it can be done, just to tromp on the throttle hah or it wont be long.
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Old 12-23-2004, 07:41 PM   #4
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Default Re: Tranny interchangeability

Quote:
Originally Posted by d.denis
I have a 93 ssei with the 4t60E with traction control and performance shift. The tranny is shot and I have a 93 olds 98 parts car with the same tranny(minus the traction control and performance shift features) The tranny shops are telling me that it will not work because of the traction control and perf shift. The gm dealers are telling me it will work as long as I use the electronics from my tranny. Anybody with some experience on this subject your help would be greatly appreciated.also the olds 98 is not supercharged and both trannies have the same final drive ratio. Thanx in advance!!!
I'm pretty sure if the olds has the same final drive then the olds had to of been */c. If that'* true then all you really have to worry about is if the mounts are in the same place. If the dealer is saying you can then i wouldn't argue with them.
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Old 12-23-2004, 09:05 PM   #5
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Default Re: Tranny interchangeability

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Originally Posted by 95naSTA
Quote:
Originally Posted by d.denis
I have a 93 ssei with the 4t60E with traction control and performance shift. The tranny is shot and I have a 93 olds 98 parts car with the same tranny(minus the traction control and performance shift features) The tranny shops are telling me that it will not work because of the traction control and perf shift. The gm dealers are telling me it will work as long as I use the electronics from my tranny. Anybody with some experience on this subject your help would be greatly appreciated.also the olds 98 is not supercharged and both trannies have the same final drive ratio. Thanx in advance!!!
I'm pretty sure if the olds has the same final drive then the olds had to of been */c. If that'* true then all you really have to worry about is if the mounts are in the same place. If the dealer is saying you can then i wouldn't argue with them.
The trannies will interchange but the olds trans won't hold up as well to the */C....for the Traction control and the fun buttons....Just swap the boxes on top of the trans where it shifts..I think.
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Old 12-23-2004, 09:13 PM   #6
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I thought */c cars had a specific final drive ratio and the n/a cars had a couple specific final drive ratios as well. Under that ***-umption, i was thinking that the olds had to have been supercharged?
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Old 12-23-2004, 09:49 PM   #7
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Quote:
Originally Posted by 95naSTA
I thought */c cars had a specific final drive ratio and the n/a cars had a couple specific final drive ratios as well. Under that A$$-umption, i was thinking that the olds had to have been supercharged?
Yes you're right, the */C'* have a lower final drive than the N/A'*.....Good part of why the N/A'* can run with the */C'* so well.

I think I got something like a 2.84 in my SSEi and the N/A'* have like a 3.06 or a 3...........17? I think
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Old 12-23-2004, 10:43 PM   #8
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you are right. I believe that most/all NA cars have the 3.06, there are exceptions but for arguments sake NA=3.06. Now the SSEi with the HD version has the 2.84. I know for a fact that Buicks and Olds have different trans options, I believe that the buick and the olds have a option for a 2.84 and a 3.33 ratio on a NA application
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Old 12-23-2004, 10:46 PM   #9
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I thought that the Series I */C'* used a 2.97 and the Series II */C'* used a 2.93. I know for a fact I have a 2.93.
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Old 12-23-2004, 10:52 PM   #10
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FR2 - ratio, transaxle, final drive 2.93
FW2 - ratio, transaxle, final drive 3.06
F17 - ratio, transaxle, final drive 2.84
F79 - ratio, transaxle, final drive 2.97
GX3 - ratio, transaxle, final drive 3.33


I know that the 3.06,2.84 and the 3.33 could be had in N/A applications The 2.93, 2.84 and the 2.97 could be had in the SC applications in the HD version

Willwren where are you??????
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