Mongo1958
Junior Member
BTW, what other upgrades would be needed for a well tuned 107? Bigger belt to with stand the load? What about the primary and trany? Tires? all that jazz?The Andrews 48 is very similar to the 255 but with more overlap and will carry the TQ out past the point where the 255 fades which is between 4000-4500 rpms depending on exhaust and tune. However, since you never hit the rev limiter, no real reason to upgrade to the 48 cams. Now, should you increase displacement to 107" in the future, the 255s will have to go and head work would be in order. You think you are happy with the way the bike runs now; you are in for a treat should you ever go down the 107" road.