Good afternoon,
I have a 1980s/early 1990s Mercruiser 5.7L MIE that I pulled out of a 1991 Sylvan Ski Boat. The serial number that I found on the motor is C391836. I was able to cross this number to a 1987 - 1995 5.7 Competition Ski GM 350 V-8 by adding a zero before the C in the serial...