What's your mpg...

[dwragon]

Please post your mpg here, engine,fuel system, transmission type (OD or not), rear end ratio,and tire size would be appreciated.The reason for this is that I would like to get a realtime comparison for a future build (454/1996 NV4500/342:1). Thanks all.

 

[RichLo]

1996 454 vortec, 4l80e, Dually, ECLB

Just over 13mpg empty

 

[FLJoe]

1996 4 door Tahoe, stock Vortec 5.7 and 4L60e, 4WD, LT265/75R-16 tires, and whatever gear ratio comes with the factory tow package.

16.5 mpg long term average (I check it with about every other tank full).

 

[Keeper]

1996 454 vortec, 4l80e, Dually, ECLB

Just over 13mpg empty

How in the world are you getting 13mpg? That would be nice

99 454vortec 4l80e ccsb dually 4.10 and 33" tires ... 9-10mpg regardless

 

[Zephian]

My 97 K2500 'Burban gets 12.3mpg avg last I checked. I usually just fill up at Flyers. She's not picky. Mixed driving. 454 + 4l80e on 33's.

 

[smdk2500]

1995 2500 ECLB 4x4 4.10 4L80E 265/75/16 6.5 TD 15-16 mpg combined
1995 2500 RCLB 4x4 5 speed 265/75/16 5.7 TBI 12-13 mpg combined.

 

[PlayingWithTBI]

I just checked mine with one 120 mile trip on the highway 75 - 80 MPH ( @ 2800 RPM) and mostly local after that (with Hiway Lean Cruise). 1988 C1500 RCSB, 5.7L, 700R4, 4.11 gears, 275/60R15s - Right at 13 MPG

 

[wirlybird]

How in the world are you getting 13mpg? That would be nice

99 454vortec 4l80e ccsb dually 4.10 and 33" tires ... 9-10mpg regardless

I was going to say the same thing!

 

[wirlybird]

1997 Chevy K3500 Silverado ECLB Dually 4X4 7.4L Vortec (140K miles) Auto 4:10 235-805R/16 8MPG with trailer but now has new EGR valve and other items so going to check again and pray for better!
1997 Chevy Tahoe LT 5.7L Vortec (330K miles) 2Dr 4X4 auto stock tranny and gears (trailer package) 265 tires. 17MPG consistent average.

 

[Supercharged111]

My 454/4L80/4.10 with 225/75/16 tires has done a couple of 10.7mpg empty runs. I rarely drive it empty so the sample size is small. Towing? It's all over the place.