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| 1997 Transmission Swap http://www.pontiacbonnevilleclub.com/forum/1992/topic51829.html |
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| Author: | Mitchellman [ Wed Jun 20, 2018 8:11 am ] |
| Post subject: | 1997 Transmission Swap |
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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| Author: | 95naSTA [ Thu Jun 21, 2018 2:52 pm ] |
| Post subject: | Re: 1997 Transmission Swap |
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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| Author: | Mitchellman [ Thu Jun 21, 2018 7:05 pm ] |
| Post subject: | Re: 1997 Transmission Swap |
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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| Author: | 95naSTA [ Thu Jun 21, 2018 8:53 pm ] |
| Post subject: | Re: 1997 Transmission Swap |
Yeah, I'm sure that would have everything you need. Some minor wiring might be required. |
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