Jammer

iTrader: (1)

bone stock 04 ext cab 5.3... 13.5 average...mixed use.
(heavy, quadrasteer)

blk03

iTrader: (2)

I remember why I bought the 4.8 now. Next time, I will not worry about mpg though.

12sec.5.3

iTrader: (1)

I get about 17.5 with 3.90's and 28.5'' tires. That's babying it everywhere.

Jorday

I dont know how some of you guys do so well on fuel economy. My right foot causes poor mileage.

budhayes3

iTrader: (19)

Between 13-14.5 mixed. Seem to get worse mileage when the weather is nice and I have the windows down and I can hear my exhaust.

FASTONE

Hey guys, thanks for all the replies!!Still seems to vary a lot, looks like the 5.3 will do a good bit better under normal driving and I know the 2500hd is a lot heavier then the 1500.I do a lot of driving with no load too, I just like the added cubes of the 6.0.I noticed one truck with a blower was getting real good mileage I wonder which would do the best turbo or a blower?Also noted one with tune to get good mileage and thats interesting too!I WANT TO THANK ALL OF YOU FOR RESPONDING!! I usually post in the ls1,internal or external sections,again thanks!! FASTONE!! :

diamondd2

00' ECSB 4X4 5.3L 33" tires.


50% HWY(65-70mph) - 50% City(NYC) = 15 mpg, 14.25mpg w/ A/C always on.

marc_w

I drive mostly backroads at like, 30-45mph. I'm definitely not the norm here, but I could pull off 22+mpg on certain occasions, before the cam.

My true highway mileage wasn't ever that great. Low 18's with the cruise on under 70mph.

After the cam here - I haven't done any backroad mpg logs - the cam just started running right for me the other day.

I made a few small highway trips, and preliminary results there look better than before. One trip I averaged 19.1. Definitely a new best there.

FASTONE

Thats pretty good marc w,I ve been reading you post on the small duration cam,interesting idea!I believe I could get pretty good mpg from a new truck as I drive fairly easy and try to save a little gas if I can,I get around 14.5 with my 5.7 tbi z71 with 32 tires and I do alot of just running around driving, not that great for gas mileage.Thanks for your reply and keep us posted on your truck progress.

Todd@AZPowerAndSound

iTrader: (1)

16mpg is pretty average per tank for me..consisting of 75% city, 25% highway. I just break 400miles per tank.

04 rcsb 1500 2wd headers, cat back, airaid, 22s