How much to replace/complete an early 80's Chevy 350 rebuild that needs- Block, Crank, Pistons, and Rods? The lower short block is complete, as well as outdrive. I have exp. w/land motors and will attempt to repair/replace myself, possibly find used parts. I can buy this boat for a song, but I do not want an engine project over $1000 to complete. Any idea on costs to complete motor?