.040 bore over

[Butters]

is this the biggest piston you can buy to bore over. cause like in rockymountain thats the biggest they have. how many cc's would this give you?

[mikeboone]

Here's some #'s for you: stock bore-74mm stroke--65.5mm for total of 282 cc's. I know you have several options avail for boring out. To go .020 over would give you a 289cc this is a 75mm piston**.040 over is a 76mm=297 cc's**77mm=305 cc's You can also stroke your crank for motors up to 390 cc's or so but this can get expensive. Contact C&D racing for the max bore you can go on your stock sleeve or price of a big bore sleeve/piston combo.