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Old 07-14-2006, 02:07 PM   #1
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Default 4T60-E vs 4T65-E

Ok, I have searched and searched this forum, and I am unable to find a definite answer on this. I have the 4T60-E, will the 4T65-E work in my car?
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Old 07-14-2006, 02:09 PM   #2
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Definate answer

No it will not work unless you change wiring harnesses and pcms and more than it'* worth.
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Old 07-14-2006, 02:12 PM   #3
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Definate answer

No it will not work unless you change wiring harnesses and pcms and more than it'* worth.
Thank you very much. I now know what NOT to get when I goto the yard.
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Old 07-14-2006, 02:14 PM   #4
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Better yet... you may need the exact year.. hang in til some of the experts give you the low down.

They changed connectors and things over the years.. it'* pretty crazy and you are probably limited to 94/95 for replacements.
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Old 07-14-2006, 02:17 PM   #5
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Quote:
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Better yet... you may need the exact year.. hang in til some of the experts give you the low down.

They changed connectors and things over the years.. it'* pretty crazy and you are probably limited to 94/95 for replacements.
That was going to be my next question tommorow(by the time I realized it)

So, what years am I limited to?
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Old 07-14-2006, 02:30 PM   #6
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1995 is for sure, 1994 MIGHT work for you. If you get a 95 FROM A BONNEVILLE, you'll be fine. Buick LeSabre'* and other similar cars had different gear ratios. Make sure you are 3.06 before you go, and make sure the donor car had a 3.06.
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Old 07-14-2006, 02:37 PM   #7
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Originally Posted by willwren
1995 is for sure, 1994 MIGHT work for you. If you get a 95 FROM A BONNEVILLE, you'll be fine. Buick LeSabre'* and other similar cars had different gear ratios. Make sure you are 3.06 before you go, and make sure the donor car had a 3.06.
I have the 3.06
On the subject of 3.06, what if its NOT a 3.06? Won't work?

EDIT
Is it possible to look on the transmission to determine what exactly it is? Or, do I have to go by the RPO list?
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Old 07-14-2006, 02:40 PM   #8
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I think the trans has a tag somewhere on them that correctly ID'* them.

YOu want to ensure a 3.06 because otherwise your trans will not shift properly and at the right times.
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Old 07-14-2006, 02:42 PM   #9
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Oh, so its back to the PCM issue again huh? Current PCM thinks the tranny is a 3.06, but its not and it shifts differently correct?
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Old 07-14-2006, 02:44 PM   #10
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You got it...

Round hole...square peg theory..

With a big enough hammer...it might fit...but it'll never be right.
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