Whats the story with the LT4?

 

it's a bigger number!

 

good enough for me

 

 

Great info, and subscribing . . .

Hope to swing a '14 GMC 6.2 NHT or Denali 4X4 crew short box by next spring.

May wait for a so-called "mid-cycle refresh" though, in hopes that GM decides to add rear seat A/C vents, plus some better interior and exterior colors . . .

 

chuck, just curious i have a 2014 GMC sierra d cab with the 6.2 your track times are close to what I've researched my truck does stock, what do you think a 6.2 would do with a tune before and after the tune time ease compared to your observations with the 5.3?