[FFR428]

I should also mention both topoilers and sideoilers were used in marine production. The blocks for the most part were cast as sideoilers but drilled for topoiling. While the majority was topoilers there were some sideoilers used in boats too. The marine topoilers won't have the rear sideoiler galley plugs, or the side and front plugs machined and installed. Some even have the sideoiler galley "hump" as it's called shaved to clear for motor mounts. The sideoiler galley is cast on the left side of the block right above the crossbolts. Easy to spot. Maybe someone can post a pic to show you exactly what that area looks like. And also the rear of the block too. If the block had a crusty saltwater lifestyle it's porous as a sponge possibly. I've seen a few that would make you cry. But that's worst case and you always hope for the best otherwise. It could be a very good deal for you. The C7JE marine heads are actually pretty good.

G.