| Wrong Electronic Spark Control Module? I have an 86 Iroc-Z that had the 305 Vin F in it. Original owner swaped it to a 74 350 cmj motor. My question is I have the original Spark Control Module for the 305 in my car. Looking online at an 87 Iroc with the 350 the spark control module is different from the 86. Should I Get the spark control module for the 87 Iroc because its meant for a 350?
Napa part number for the 86 Electronic Spark Control Module: ECHESC216
Napa part number for the 87 Electronic Spark Control Module: ECHESC203
Is there a difference? | | | |