Haven't seen a stock h2b make 250.. People can claim to be stock with cams but not stock, and 270 is different from 300, this is NA power.. You will hit a wall, and then will you see why it cost so much!! A bunch of OEM parts will not make 300, it will take a custom crank, rods, pistons, and a head which flows big numbers, etc! Then you will be limited by the intake to feed that big cam, and big port...LOL
300 can be done anywhere, just not easy, or cheap!
Later!!





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