Gmc_sierra

Yeah got the vvt delete.

mjcotroneo

iTrader: (13)

I put the ls9 cam in mine and with a stock converter I get between 18-22 hwy and 15-17 in the city

GM1697

iTrader: (1)

mods in sig

13 around town
17 on highway, average speed 75-80

driving like I stole it all the time.

Vortec350ss

iTrader: (20)

Hell yes!!

Drop down to 65 on your ride home and see what it gets. Just for a tank. I think you'll be impressed.

For what it's worth his cam has -8* of overlap which is enough to give it a nice healthy but clean lope in a 5.3.

dmelvin

iTrader: (8)

E85 will just make your problem worse. Cam and converter will drop your mileage like a rock, especially if the converter is loose. That only applies to city driving, on the highway, you might have gotten a little bump in fuel mileage if your cam makes more power under the curve that you had before.

My 02 5.3 went from 14/17 to 11/19 after my head/cam/exhaust/converter swap.

gnd111

iTrader: (1)

My 404 with 620 lift cam and 3400 Yank gets about 14 highway and its RCSB

GREENSIERRA

I have never calculated but I am positive I am in the single digits for mpg.
as for you a 6.2, awd with a cam and converter is not gonna get much for mpg