Thread: 1987 tbi
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Old 05-08-2020, 04:52 PM   #6
Leonard1
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Join Date: Nov 2005
Location: Paducah, Ky
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Re: 1987 tbi

Quote:
Originally Posted by 67 Burb View Post
Are you using the 4L60E tranny from the 95? If you are, you would do best to use the wiring harness and ECM from a 95. In the 95, the ECM controlled the tranny. The 4L60E in 95 has slightly different wiring than even the 93 or 94 (can't remember what year the extra wire appeared). I think there was one more wire in the 95 tranny harness.
Actually, I bought an 89 tbi motor and 700r4 earlier in the week, and I think I'm going to use it instead of the 95. And it came with the engine wiring harness cut at the same place as the one in my 87. Seems to be in great shape, and I think it will make things easier. Should be the same computer and wiring, according to the wiring diagram you sent.
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