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Model Year GMpartNo Engine
F,Y 1985 1226870 5.0L/5.7L
F,Y 1986-1989 1227165 5.0L/5.7L
F 1990-1992 1227730 5.0L/5.7L
Y 1990-1991 1227727 5.7L
Y 1992 16159278 5.7L LT1
F 1993 16159278 5.7L LT1
It doesn't look like you have much of an option, but I don't know for sure, just FYI.
Just got 85 computer , wiring , TPI intake and the 85 uses a MAF module for the MAS air flow . I got tired of cross fire injection on 84 . 85 ecm number 01226870 I would not try a smoke test with out checking out pin assignment on computer. :eek:
Maybe I'm mistaken, but haven't I read about people swapping their '85 ECM's for the '86? :confused:
Yes, but we had to either repin or replace the harness, along with change a couple other small things. Those of us that have done it did so because the ECM in the 85 sucks. It's slow and primitive, and burning custom PROMs to correspond to your mods is futile. 165s are easy enough to find because they were in so many vehicles (listed above). Ebay constantly has them and they seem to sell for around $50. I'm sure you can get one for less in a junk yard.