[ogasman]

Anyone out there have experience with running a marine block? I have a lead on two out of a 1968 Crisscraft. The blocks carry casting number c7ae, one set of heads is c7ae, the other engine has different heads as of 2 years ago. They have casting number c4ae. They have approx. 600 hours by the meter, and were running well when they were replaced by big block Chevy power about a month ago. They are cast as side oilers, but not drilled. Does anyone know if they can be drilled to sideoiler configuration? The boat was run in fresh water for aprox. the last 20 yrs, before that unknown.