Need advice 3.42 or 3.73

[BP68]

Hello all,

I asked some questions about a year ago on rearend gears, and never really made any decisions.

I have a 06 Silverado 1/2 2wd Ext. Cab 5.3 with 3.23 gears and 275/55R20,Flowmaster and drop in K&N. Runs pretty good, but could use a little better punch off the line and in passing gear.

It is a daily driver mostly city driving. Ocassional highway driving and very ocassional towing/hauling. I average right around 14mpg give or take a few tenths.

What would my best bet be 3.42 or 3.73? I am looking for more performance/seat of the pants feel, but don't want to totally sacrifice mpgs.

One person told me that with the 20's and 3.23 the motor is prob not getting up into the optimal rpm range, and that 3.42 could possible help mpgs by letting the motor rev up a little more.

Basically, what gears are y'all running and what mpgs are you getting.
Would I see a big diff in mpgs (good or bad) between 3.42 and 3.73? Should I just go 3.73?

Thanks