Has 5.7 stamped in the block and a 4 bbl Rochester on top of a Volvo penta intake manifold. No serial number can be found anywhere visible. I haven’t seen non groves valve covers with 4 center bolts when doing a search.

Pictures might help id it ? Not sure about Volvo but Mercruiser usually has a tag riveted to the block somewhere down near the starter. It might also be a custom built engine. Are the valve covers aluminum or stamped steel ?

Trying to post a pic but I can’t I’m to new.

Send some pics to my e-mail address and I will post them [email protected]

Email sent

Joe,
Not sure if those pictures will help or not unless somebody recognizes the valve covers. The number on the intake is simply the intake manifold casting number. And . . . . you need to get rid of that fuel system asap

What fuel system would be best?

Those look like early-mid 90s Chevy LT1/LT4 valve covers, Corvette variant.

Bolt pattern is same as any other center bolt small block chevy from late 80s-on.

I’d say yep appears to be that. Hence why I couldn’t find anything with a search

Anything to get rid of those rubber hoses and the plastic fuel filter. The Coast Guard would probably have a field day with that. I imagine the best thing would be the factory metal line. Does it have the mechanical fuel pump or is it electric ?