By my calcs, the unloaded circumference is 2610 - so you're right. With 3% squish factor, 2531mm or about 636 revs/mile.

 

k sounds good i will go plug that in the programmer also, yeah thanks guys for everything, i know that i am not the first to ask so thanks for letting me know...

Oh and i also did do the +12 +12 +9 an i have only driven it about 10 miles so far but i can tell a difference and it is nice, the shifting is a loooooooooot smoother then what it use to me so thanks...