We have a tech article of a 426 small block we built last year that ran on pump gas and made over 600HP on the dyno. You can check it out here http://www.hughesengines.com/TechArticles/12feb2008smallblock426strokerdynotest.php We are currently finishing up a 472 cubic inch small block. We hope to have it on the dyno in the next 3 weeks or so. Can't wait to see those numbers! Kevin @ Hughes
