Maximize Top Speed

[posey24]

I keep reading that all the upgrades i do including big bore kit wont.give me anymore top speed...on a generally flat or slight down hill WOT i can get to 40 at 9k rpm. I will be doing the big bore kit from a local vegas dealer. As well as a new carb and cam shaft. What can i do to increase my top speed and still be at or belowe 8k rpm. With out sacrificing too much acceleration.