you can, but not if you rebuild it back to stock specs. you'll need lighter internals, raised compression, headwork, wild cams, any and all bolts ons you can get. if you decide to stick with EFI it would probably be best to ditch the ecu and get a programmable stand alone unit. switching to carbs is an option too.ratm wrote:would you be able to make over 300 hp with a complete engine rebuild?