86 305 ecm
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Joined: May 2007
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From: Lansing, MI
Car: 1988 Formula
Engine: 305 TPI
Transmission: t-5
86 305 ecm
Hey guys me and a friend of mine just finished up a 305 to 350 swap on his 1986 trans am not to long ago and we know we need to get a 350 knock sensor, ESC module and 22 injectors but what about the ECM?
will i be needing to do something with that and if so what are my options? any help would be apreciated! thanks!.
will i be needing to do something with that and if so what are my options? any help would be apreciated! thanks!. 
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From: Chasing Electrons
Car: check
Engine: check
Transmission: check
Re: 86 305 ecm
Sounds like a TPI setup, yes??
The 305 & 350 used the same ECM (1227165). The calibration (MEMCAL) is different. Once you replace the 19#'ers with the 22's it will run OK with the 305 calibration. The maximum that should be done is to replace the MEMCAL with one for a 350.
Note that they are only available for auto transmission equip'd cars.
I wouldn't even swap the knock sensor and module unless it becomes an issue.
RBob.
The 305 & 350 used the same ECM (1227165). The calibration (MEMCAL) is different. Once you replace the 19#'ers with the 22's it will run OK with the 305 calibration. The maximum that should be done is to replace the MEMCAL with one for a 350.
Note that they are only available for auto transmission equip'd cars.
I wouldn't even swap the knock sensor and module unless it becomes an issue.
RBob.
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