431 kit

[edge91]

has anyone heard anything about a 431 kit offered by white brothers, the shop here says that white bros says this is the way to go, with a hot cam? has anyone used this combination, white bros assures me that i will be satisfied. some input on this would be great,

[Florida400EX]

When I talked to white bros, they said the best big bore/ cam upgrade that they have tested has been a JE 416 piston, with their track cam. That setup will be in my quad within the next couple days, I'll let you know how I like it.

[edge91]

When did you talk to them? I just heard this yesterday, and he acted like it was something they just put in their catalog, but they had been running them in their 4 strokes, and they have had a numerous amount of dyno testing?

thanks for the input it seems kind hard to get, i'll be looking for the results