How much difference between 4.10s w/26" tires vs. 4.56 w/28" tires?
 

I wanted to know the difference because one of these combos I will be going with. If I decide to go with the 4.10 combo, its because Im going to plan to spray later on down the road, but if I go with the 4.56 combo, I will stay all motor. Im currently running 3.42s which isnt cutting it for me. Im barely passing the traps at 5700 and in my opinion, its not getting me out of the hole that fast.

Both combos look pretty close(4.10/26 and 4.56/28). At your 5700 rpm (I know your trap rpm will be higher with the change, I just picked a number to use for example), the difference is only 3.4 mph.

Here is the calculator if you want to play around with different #'s

http://www.virtualengine2000.com/Calculator.htm

http://www.virtualengine2000.com/images/Calcul2.jpg