How can i find out exacty what engine/drive system i have?

Chris' Craft

Cadet
Joined
Jun 16, 2011
Messages
19
im fairly confident that its a chevy 4.3l because it says vortec on the valve cover but would like to know for sure. the outdrive says OMC cobra but im unsure of the exact model. its in a 95 chris craft concept 20. i have pics if needed.
 
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