Hi, I have a OMC GM 3.0L 4 cyl. which I can find no numbers on except the casting # ON BLOCK which reads: GM 14097080 97<br /><br />any one know?<br />Thanks
procut,<br /><br />You can bet that the I/O in your boat is the same year as the boat. Look on the stern (satmped in-or plate) for an HID (hull identification number). The last two digits will tell the year.
