Welcome to the site! I've got the same motor as you. If its never been bored, Id consider a complete rebuild. I rebuilt mine for around a thousand but I did all the work myself. A friend just did a complete rebuild for around 2 thousand and we pulled it out and tore it down ourselves. after it was bored .030 over and refitted with new pistons and rings we assembled it and installed it ourselves. It really was'nt that bad. If you decide to junk it let me know, I'd like to have one for spare parts.
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77 V20 cuddy with 170 I/O Mercruiser
72 16ft. Carolina w/a 25hp Evinrude
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