010 4 bolt main 350 block. Fully prepped and ready. .040 over bore, Howards billet main caps, ARP main studs. All machine work and prep was performed by Mullvain Motorsports in East Peoria, IL. The block is still at Mullvains. Save money on locating a block, having it bored/honed/align bored/ caps installed and prepped. $1200 obo