Pumped up 454 with estimated 425 hp. Mods: Lunati Cam, Mallory HEI Ignition, Edelbrock Performer Intake Manifold, Stainless Marine Exhaust Manifolds, Holly 4bbl carb, heads (ported and polished) and rockers. Mods were completed by original owner. I am the 4th owner of this boat. It was originally purchased in 1988 and lived in Wichita, KS (home of the Barefoot Nationals). Now it is in Wrentham, MA and has a new crazy owner that is trying to learn to barefoot - should be good!