thats why I said possibly LOL I wasn't to sure, txsilverado what kind of mileage did you get on the freeway/highway with the stock cam?
i quit paying attention to mileage in the truck a long time agohonestly i have no clue. i can never keep my foot out of it when i drive the truck so the mileage sucks
old mod list: H/C/I/N/E/G 408
new mod list: 5.3, gears/posi, mufler and tune : (