XC racing with 440?

[Martin Blair]

why do most XC racers run 416 426 but none run 440s is there some limit on engine ccs?

[pairanutz]

most people i no run 440 -more low end -different classes have different cc limits -i have seen that duvall runs a 500 kit in his honda400-there is also one guy that runs a 465

[pnut420]

Im going to have two motors soon, the one is going to be a 465 or 505 I have to decide, I think like 4** is the limit in some classes, thats why they dont go 440's also the 416/426 still had great top end.

[GNCC#829]

There isn't a limit on cc's. There are alot of every kind of engine. In GNCC or XC you want a ton of bottom end and reliability. For the most part, the bigger bore, the less reliable. Although there are exceptions.:cool: