Brodix BB-5 CNC PORTED Aluminum Cylinder Heads for Big Block Chevy MACHINED FOR JESEL SHAFT ROCKERS. This set of heads have a small coolant leak around 6 out of 8 exhaust guides. They will be excellent for someone building a dry motor. These heads were on a 600 cubic inch marine supercharged engine making 1100HP, the cylinder heads had some corrossion around the water ports on the decks as shown in the 1st, 2nd & 6th photo's. The corrossion was ground out completely and welded up than the decks of both heads were machined back to factory minus. The chambers on these heads are 127cc's (we can mill them down…