[olredalert]

Steve,,,Definetly had low domes, if they had any domes at all. I remember thinking that a guy could run just about any gas with those pistons. Pacemaker had there own engine program of sorts. I believe they built them to have as much torque as possible while still using regular gas. These engines were painted metallic green and were prominently labelled as "Pacemaker 427s"........Bill S