1991 TBI ECM same for auto or manual?
CK5
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Manual ECM same auto?
- Thread starter jtrux
- Start date
91 is first 4L80.
Edit: whoops. ECM. Actually will be a PCM if 4L80E, but 700R4 or manual the below image will be applicable. GM used a PCM with the 4L80E, the others were an ECM. Not interchangeable, short answer.
Here's a comparison for a 454. Not that it wont run, it almost certainly would, but unlikely it would run as intended.
Here's a comparison for a 454. Not that it wont run, it almost certainly would, but unlikely it would run as intended.
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