Boring isn't a problem as long as you don't over board. .020 isn't a 366, it's a 352.7, going 2mm or (0.080) over is a 366. Keep in mind that a 2mm over bore on a Warrior is all you can go, so it leaves no room for a rebuild, and you'll need a new sleeve. A 366 paired with a good cam and springs like a Megacycle, and a good exhaust will produce around 28HP, more if you get your head ported by a professional.just looking for info. wanna upgrade piston. is boring over a good bad or doesnt matter?? I know going .20 over brings it to a 366 but whats else would it affect?
0.40 over or (1mm) is a 357.5, I dont think you can get a 0.30 over piston for a Warrior.do you know what 30 and 40 over is?
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