lol, great explanation... and i'd also add 3.42/73 makes the car feel much lighter.No. NEVER.
Regardless of whether you have a 5.7L, 5.0L, or 4.3L, the absolute MINIMUM I could POSSIBLY recommend is 3.08, and that's ONLY if you usually:
a) do the vast majority of your driving where redlights and stopsigns are of no concern whatsoever
b) drive very conservatively and care nothing for random gratuitous bursts of acceleration
c) either wish you had cruise control, OR, if you have it, you just set it and forget it until you get off the highway
d) drive alone and carry little to no excess weight in the car
e) have absolutely no need or care to attempt to improve city MpGs
For the vast majority of noncompetitive uses, 3.42 is the wisest choice.
That said, even for those who will never need to deal with towing, carrying lots of weight, or stop&go traffic, I can't recommend less than 3.08.
I've said it before, and I'll say it again: the ONLY reason GM ever equipped these cars with 2.56, 2.73, and/or 2.93, was Corporate Average Fuel Economy. (Had it been up to 'us', even 3.08 & 3.23 might've been avoided!)
If you have no interest in competing, 3.42.
If you can afford all the other parts necessary to have a chance to win a competition, then it's 3.73 or deeper.