new vortec 5.3 XFE?
 

so whats the low-down on this engine? what did GM do to it to make it more fuel efficient than the LY5??

Google helps answer that.
http://www.pickuptrucks.com/html/new...l-economy.html

Tuning goes a long way

it looks like it has something to do with being a hybrid maybe??

It's not a hybrid

ahh......thanks for the link. So what I'm gathering is that the new pickups that are equipped with the 6 speed automatic trans get the "XFE" designation??

Your looking at weight reduction with the aluminum block. VVT, Tuning, less drag and smaller gear ratio all combined.

3.08 gear ratio that truck sucks balls lol XFE Xtra Fag Edition

i wouldent buy that truck with that gay gear

Dido.
Get the regular or the 6.0 and a tune. I bet that thing is a DOG off the line

does the xfe stand for Xtra Fuel Efficient

i hope they could have figured out something better

it do.
It was a toss up between that and EMB
Even More Better