you are right in saying the % of gear change is more, but the reason (my opinion, which doesn't mean much) that there would be a bigger improvement going from 3.73-4.10 than 2.73-3.08 is because neither of the 2.73-3.08's are putting you in a good power band anyway. 3.73's are getting you close...4.10's are dropping you right in it...about 3 grand at the beginning of each gear....and through the traps at about 5500-5700.
Much more time in your power band will give you much more improvement in ET and MPH.....
But that's what i think....................
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4.10's,long tubes & 75 shot...Goes 12.50's
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