cal-pak??

[fgordon]

I'm preparing to convert to the 86/87 ECM.

ECM and Sensor Information

What is the ECM cal-pak and how do you identify the part number?

 

[BRAD_PADGETT]

The cal-pak is the small removable chip in the 84-87 ECMS. Use your 84/85 cal-pak in your new 87 ECM. Brad

 

[fgordon]

Thanks....

 

[6SENSE]

84-87 turbo buick calpak will have # 503 or 504 for last 3 digits. Either will work. #s are right on top of the "small chip" and can easily be seen when you open access cover on ECM.