307 or 350?

[mattman21]

'86 23' marlin day cruiser, chevy 350?, holley pro-jection fuel injection system, edelbrock high-rise intake manifold, omc outdrive.<br /><br />I put the question mark on the chevy 350 because that's my question, how do I tell if it's a 307 cid or 350, I'm not sure which one it is. Thanks. oh yeah on the intake manifold was stamped the number 346250 and under it a 9. Then close to it was GM.

 

[Bondo]

Re: 307 or 350?

If you look on the rear port side of the engine, just behind the head, there's a small shelf on the block.. There's a Casting # there that can tell you What, When,+ Where the motor came from,+ What it Is....<br />Post the #,+ I'll look it up...