Tahoe/Burb guys give me some MPG figures
 

Im not expecting 18MPG, hell 14 would be nice. But after the lift and 33" tires the Hoe is getting 10-11. MAYBE 11.5-12 on the interstate after my last fill up to the hunting camp. For the most part it doesnt bother me, its a big truck and holds everything I need it to in comfort. I only drive to and from work 8 miles round trip but hunting season is going to kill me. I also have about 5-600LBS of tools and winch in the back. Im thinking of trying to lighten it up some but not sure how much it will really help? All maintenance up to date and not throwing any engine codes. I keep it checked as I have a reader.

I think mostly its the 3.42s in the axles that are killing it, it has to shift alot on hills.

33's and 3.42's with a 4L60E's 30% overdrive is killing your milage. You need a set of 4.10's at leats for that size of tire. Most all stock trucks with 265's(31's) got 3.73's. Most all of the 3.42 trucks got 245's(30's). 12-14 would be good if you drive it conservatively. And just because the engine light isn't on, doesn't mean it is up to snuff. ONLY run AC DELCO platinum's or iridum plugs, good 7 or 8 MM plug wires, the blue marine grade cap and rotor, and the updated MPI conversion set for the injectors is another good investment since the stock poppets were crap even new.

I updated the spider when I rebuilt it. Its been a little while on plugs/wires so I may do them soon Ferm, thanks.


I drive like a grandpaw, my wife makes fun of me for it.

If you are interested. I've got an external injector mpi set up for sale. You'll need a wiring adaptor and some one to put a tune on it to take advantage of the setup

If I had known you had one of those, I would have made a detour on our trip to Jersey this summer.

Ive got an 05' 2500HD 6.0L and Im about where you are w/o the lift and 285's.

I checked it this morning. Avg of 10.8 so yea it sucks and I drive about like you do. Pullin the Wellcraft I get 8.9.....Did I win?????

With those gears and tires I would avoid using O/D

i've got a 02 tahoe 4wd w/ 5.3. pure stock with 265/70 16's yokohama geolanders 185,000 miles.. i just got back from a trip to st pete, all interstate. got 18 mpg keeping it at 75 , 2000 rpm. around town i get 14. we only use it for road trips and launching the boat. trailering to the keys, i got 11 mpg at 65, in trailer mode.

have you guys seen any feedback on the new dodge diesel 1500?

saw one of those trucks the other day, guy said he paid $48,900 for it. I just bought a 1997 F350 7.3/5 speed crew cab dually for $4000 with 175,000 on it. I figure i could have 12 of my trucks for what that new dodge cost. Kinda puts it in perspective

Ferm, I've actually got three of those set ups, two with no throttle body, one with a mercruiser throttle body. If you need one, let me know