Originally Posted by
Teufel Racing
OK Monty,
Part two of my brain teaser series. LOL. Saw on another thread you were going to provide info on the filled cranks. Looking to hear what you have to say on that. The main reason for the post is headers. As to which one to use and why? What will changing from one type to another do and not do to or for the powerband. Hopefully this won't require the huge ammount of typing for you.
Oh and the new Blue heads, what would one of those run should I want one to be different.
On this one I will say read back on the bazillion posts that this has been explained already

lazy focker!
You should get the whole X7
performance difference wise,filled vs. unfilled is not a huge difference, there is a minor advantage to the filled crank in low end throttle response but in my experience the filled crank also brings the engines idle down to a smoother idle quicker and more consistently, you won't get as much of the two/three stage idle sh!t.
be careful who you have fill your cranks and resize your sleeves these days, everybody and their brother thinks they are experts at it