I can't remember what cam, but it is a 69 340 with ported X heads and a holley 600 vacuum secondary...
Eddie had John Cope install a Holley 750, but it ran worse, so he had him put the holley 600 back on... Bur John used two thin base gaskets with a thin steel plate between them and we like using the Edelbrock 5/16" thick base gasket for the dual plane for heat boil protection....