18-19.5 empty
14-15 hauling 2000-5000lbs

 

Sounds good, the only reason i'm asking is that i'm going to be getting a 4x4 and get rid of my car..I would really like a dodge, but even better a dodge diesel. Which hopefully I will be getting in the next couple months... ;D I would be driving it at least 60miles a day to and from work, which should give it a good run since most of it is highway.....

 

I get 16 with mixed driving on my 97. 19.5 freeway. Both empty. My 97 getts better milage than my 01 but only after the bumped up the timming and got a DTT trans.

 

1996 Reg Cab, 3.54's, auto, camper top

22.3 last tank mixed city/highway

19.5 towing my 18' Donzi

 

Update - just pulled a Chebby 4WD across NC from Western Carolina University to about 45 miles east of Raleigh

Running 70-75 mph where I could with about 10K load (gooseneck with 4WD manual trans C30 cab and chassis) it got 15.7 on the way out empty and back about 100 mountain miles loaded. Got 14.3 on the rest of the way back but that also found me stuck in three different stop-and-go traffic jams for a total of about 10 miles.

With the 3.55s most hills are best taken at 70 - under 70 she would start to slow down towards the top. Not bad for a stock truck with 145K miles.

 

Wow I guess I should be feeling kind of lucky.
Love my average at 20.5.

Trickytrae

 

I average around 18.5 with mine. I have the 3.54 gears and 305/70r16 tires. I am getting ready to go back to smaller tires so maybe that will help and maybe that will hurt. I drive about 1000 miles every weekend and I have never gotten below 17 mpg.

 

2x4 3.55 3500 gets 18 empty(+ or - 2)
still have the weenie 215/85's
few mods but mostly the tranny(converter) helped
Loaded gets 12 15k # trailer and racer



Someday I'd like to get the timing adjusted

 

Hwy mileage 20
drive to work and around town 17
around the farm 14-15
Mods:SBC street pullin clutch w/ big input shaft, 0 plate, 4k gov springs, non wastegate housing, 4" exhaust to 5" stacks, 60# valve springs, and a few other things I can't think of right now rollin on 33x12.5x17 pro comp mt's

 

MY MILAGE HAS ALWAYS BEEN 18-20 MPG AVG ON THE TANK EMPTY.I HAVENT EVER RUN IT OUT OF FUEL -EVEN WHEN IVE PUSHED PAST 700 MILES.EVEN AFTER I INSTALLED MY TST PLATE MY MILAGE HAS NOT DROPPED NOTICABLY.

 

97, 4wd, 4:10's, 89,000 miles. I get around 17 to 18 everyday driving, 20+ all highway. Changes in the winter though with winter blend fuel. I find it drops by 2mpg with the thinner winter fuel.

 

I get about 21-22 mpg empty on the highway 2wd 5 speed 3.54..........

 

Hey NY MEDIC,

I would kill for your mileage! Question though, what tire size are you running?

TJ
EMT-B

 

I have a non intercooled 89 & get 25 mpg steady on heavy fuel , in the winter it drops somewhat due to lighter fuel , the only mods are straight pipe & i tuned the pump , it now makes 300Hp & 930 ftLbs tq at the tires

 

My truck weighs 8,000# stock I got 13-17 mpg at over 500hp I get 13-15 this is city, freeway or towing. The lowest I ever got was 11.5 mpg in the mountains towing 12,000# at an average of 60+mpg. No noticable change in fuel milage, these are with the speedo corrected.
Bruce