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 Post subject: 1997 Transmission Swap
PostPosted: Wed Jun 20, 2018 8:11 am 
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Joined: Sun Dec 04, 2016 12:03 am
Posts: 7
Location: SW Wisconsin
Year and Trim: 1997 SSE in Black
1994 Buick Regal GS in Black
Hi all!

I have a 1997 Bonneville SSE with the NA 3800 and 4T60E(M13) transmission that has started to slip when hot(95 degree day, driving 2+ hours). I was looking to swap a 4T65E or 4T65E-HD out of a 1998 of 1999 Bonneville.

Would either be a direct swap(no computer or wiring needed)?

And if I was to get a whole parts car, should I do the 4T65E, or 4T65E-HD?

Want to get the car back to being reliable and my 1998 Bonneville SE(4T65E) that I had had a different gear ratio that was more suitable for our driving.

Thank you!


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PostPosted: Thu Jun 21, 2018 2:52 pm 
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Certified Bonneville Nut
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Joined: Wed May 21, 2008 11:47 pm
Posts: 5949
Location: Philly
Year and Trim: 95 SLE
65s use a solenoid to set line pressure and 60s use an external vacuum modulator. Your PCM can't control the line pressure of a 65.

The easiest thing is to find your trans. If you don't want to mess with tuning, the second easiest thing is wiring in a 98 setup from a L36/65-e equipped car.

Any 65-hd trans will have a gear ratio that only came with a L67. So, tuning required.

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95 SLE... a keeper. 241k miles. Low and Slow.
98 Infiniti vq35'd i30: 13.3@104mph, 30MPG Hwy
07 Infiniti G35s 6MT
07 Ducati Monster S2R 800 with DS1000 swap
05 Suzuki DRZ400S
83 Yamaha IT175K
74 Yamaha DT175: brap brap, brap
72 Yamaha DS7: '74 RD250 swap, JL chambers

Info on dropping a 92-99: Here.


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PostPosted: Thu Jun 21, 2018 7:05 pm 
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LE Member

Joined: Sun Dec 04, 2016 12:03 am
Posts: 7
Location: SW Wisconsin
Year and Trim: 1997 SSE in Black
1994 Buick Regal GS in Black
Would getting a 98 Bonneville with the 4T65E parts car with the PCM and everything work? Or would that be too involved and still need tuning and such for the 97?


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PostPosted: Thu Jun 21, 2018 8:53 pm 
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Certified Bonneville Nut
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Joined: Wed May 21, 2008 11:47 pm
Posts: 5949
Location: Philly
Year and Trim: 95 SLE
Yeah, I'm sure that would have everything you need. Some minor wiring might be required.

_________________
Image
95 SLE... a keeper. 241k miles. Low and Slow.
98 Infiniti vq35'd i30: 13.3@104mph, 30MPG Hwy
07 Infiniti G35s 6MT
07 Ducati Monster S2R 800 with DS1000 swap
05 Suzuki DRZ400S
83 Yamaha IT175K
74 Yamaha DT175: brap brap, brap
72 Yamaha DS7: '74 RD250 swap, JL chambers

Info on dropping a 92-99: Here.


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