17 x 8′ work airboat 17 x 8 airboat for sale with power to spare! engine: new gm 8100 fuel-injected marine big block. hp:425; drive:ch#3 600 hp belt drive. Absolutely, no plans are required for an airboat unless you intend to model a particular type. dont elevate the prop too much and dont be mean with the rudder area.. This is james lenard’s very fast deepvee. the hull is made by "lynch". it has a b. h. hanson indy engine with a custom mount spinning a octura 472 prop..