port & polish???

[Giz400ex]

When is it necessary to to this and why???

[DEAL]

When you have motor work, And you want the motor to breath better.

[roostu]

Originally posted by FreeStylexrider
When you have motor work, And you want the motor to breath better.

Yep

~Roost-U

[Giz400ex]

Does it make more sense to do it when your making a 426 or 440 versus 406 or 416?? I mean, a 406 or 416 isn't that much bigger than stock, but when you 426 or 440 or bigger seems to require more breathing. What I'm trying to say is do you really need to do all that for the minor motor work?

[KandK952]

well you dont really need it at all. but it is good to have when you have a 440. I dont think it is as effective on a 416, but im sure it helps out.