boreing 300ex

[r-exrider0003]

I was wantin to get my 300ex bored, and i was jsut wanting an estimate on what it would cost,and what would be the best bore...i just want some more power to keep up with the 400s, but i dont want to bore it were itll run too hot,and give me problems....any info is really apreciated....thanks

[cals400ex]

a regular high compression piston in a stock bore, .040 over or .080 over should do fine. you will want to add a cam too.