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what would be the best frame to use if i were to drop a streetbike engine ino it? cuz i have a rappy 350 and i dont think that it would be a good frame to use... any suggestions? and as far as the streetbike engine cc's, would a 600cc streetbike engine put out the same amount of power as a 600 atv engine? and how hard would it be to make that conversion?
i whould use a ds650 or raptor 700 frame. and a 600cc streetbike engine will put out way more than a 600cc quad engine. a stock 600gsxr engine puts out about 100hp and 48 footpounds of tourqe. where a 700 raptor engine puts out about 45hp. btw it is going to take some good fab skills to swap.
street bike engines cost a lot of money too....... i bet its cheaper to get a bigbore stroker and get up to 446cc than to get a streetbike engine quad (i think its possible, i think the guy with the warptor has a 446 engine)
find a used 450r and get a wiseco 500cc big bore kit, its an entire cylinder in the kit so im pretty sure it wouldnt cost as much in labor to install as a kit which requires you to resleeve the stock cylinder