could be, and the narrow bore space, and the flipity flopity cylinder wall too lol. I'm having a billet bock made to see how that goes with water only in the head. I;ve done filled iron blocks, but all the al blocks I've had have been cast. Might even try CFE if they'll do a hemi


Really the perfect world for me would be a solid cast al block with about an inch or less of water cast into the deck. I don't make the power that requires a billet, but too much for a water casting to stay put.