Chevy 6.0 L Horse Power

[Plumcrazy]

I have a '05' Chevy 2500 with a 6.0 L engine that only gets 12 MPG empty, and 8 MPG hauling my tractor on my gooseneck. My brother has a 2010 3500 with a 6.0L and gets 16 MPG empty, and 12 loaded with the same trailer. His truck seems to have much more power then mine too, but they still call his engine a 6.0. Did they turn up the HP in that? Do the new 2010 6.0L in the 2500's have more power then my 2005?

 

[Anonymous-0]

We have 2 2000 6L 3/4ton Chevs bought at the same time, both get 18-19 MPG on highway, 65-70 MPH on the farm about 12 same with a 8-10,000 trailer. 3.73 gears 4x4 300 HP in 2000 I have heard of problems but these have been the best trucks we ever owned.

 

[big orange]

6.0's have 350+ hp now, but the big difference may be the 6 speed tranny.

 

[john_Bud]

(quoted from post at 19:04:37 06/21/10) We have 2 2000 6L 3/4ton Chevs bought at the same time, both get 18-19 MPG on highway, 65-70 MPH on the farm about 12 same with a 8-10,000 trailer. 3.73 gears 4x4 300 HP in 2000 I have heard of problems but these have been the best trucks we ever owned.

That's weird. I know of a guy (owns the cleaning company that does our buildings) that bought a 2000 2500 with the 6.0L. He got 14 empty and he was a conservative driver.

I have a 2003 duramax and get what you get with the 6.0l.

 

[4010 puller]

What are you getting with the duramax? The best I've seen is 16 on the interstate empty, winter or a small load usually 10-12 mpg.

 

[jd b puller]

4010, I've got an '06 Duramax (LBZ engine).

I get around 18 on the open highway. Pulled an empty goosneck from NC to OH and got 12MPG running 70-75MPH. Coming back home pulling a 10k trailer, I only got 9-10MPG running 70 MPH and 11-12MPG if I whoa-ed it down to 65.

It does have a tuner in it, but not the best one available. I think it's a HyperTech, using "level 2" out of 3 seems to be the best combo of power and economy both loaded and empty.

 

[buickanddeere]

Have a 2003 6.0 with a 1500HD crew cab 4X4 with cap, running boards & brush bar.
Gets 13mpg just putting around short trips. 15-17 mpg highway on trips.
Mileage drops in hot weather if 87 octane gas is used.Computer has to retard the timing to reduce knock.
Determined that premium don't cost extra per mile in the summer.
I wouldn't believe the dash mileage indication after re-programing the computer.
Measure the fuel in and drive a known distance without relying on the truck's odometer.

 

[Anonymous-0]

new trucks are 6.2 with more hp

 

[big orange]

HD's are still 6.0 in the gassers 352 hp, with a 6 sp overdrive automatic.

 

[big orange]

Correction-360 hp.

 

[big orange]

Correction-360 hp.

 

[Oldmax]

I have a 2004 K-2500 not "HD" I get about 17.5 on Hiway running 60 MPH,14 to 15 around town and 13 pulling a 5700 lb Camper. It has an ^0. 300 HP with 350 lbs of torq auto trans with a 3.73 rear. one of the best trucks I have ever had.

 

[Anonymous-0]

my mistake,gas trucks are still 6.0

 

[John M]

Im getting that on my 08 LMM without a chip. Well right now I am, come this winter itll drop back down to around 13 - 15. Of course I have a computer with off road program and DPF delete with Banks exaust.No "power added" chip though. Just dont need it.......

 

[john_Bud]

(quoted from post at 07:12:49 06/22/10) What are you getting with the duramax? The best I've seen is 16 on the interstate empty, winter or a small load usually 10-12 mpg.

Mine is an 03 LB7 x-cab with 4wd. It gets 18-22 on the freeway empty. 18 is at 70-75 and 22 is at 60-65mph. Loaded it gets 11-12-13 depending on speed. The load being an 18' 6ton trailer weighing about 10k that's driving at 60, 65, 70. (lower mpg is higher mph, naturally!). In the winter it loses 2 mpg empty, but runs about the same with a load.

Oddly, when pulling a light load (10' 3000# trailer with a side by side utility 4wd) it gets 14 mpg. The Chevy engineers seem to have done a nice job tuning it for running empty, but they burn more fuel than needed when loaded. The same type of econ drop is often seen with a change to tall tires like 35's.

 

[mkirsch]

(quoted from post at 02:55:46 06/21/10) I have a '05' Chevy 2500 with a 6.0 L engine that only gets 12 MPG empty, and 8 MPG hauling my tractor on my gooseneck. My brother has a 2010 3500 with a 6.0L and gets 16 MPG empty, and 12 loaded with the same trailer. His truck seems to have much more power then mine too, but they still call his engine a 6.0. Did they turn up the HP in that? Do the new 2010 6.0L in the 2500's have more power then my 2005?

All manufacturers boost the HP in their engines a little bit each year.

12MPG empty on a 2000 6.0L is about right for around town. We were able to eek out 15MPG empty on my Dad's truck on a long highway trip once.

How's your brother calculating mileage? The mileage computer LIES. He needs to start with a full tank, zero'd trip odometer, and hand calculate miles divided by gallons at the next fill-up.

If you think your fuel economy is bad, you should try my 2002 Chevy 3500 with 8.1L. It's a beast, but a thirsty beast. I've gone through 2/3 of a 34 gallon tank in less than 200 miles.

 

[VicS]

A friend of mine had a 6.0 chevy with a manual trans ,he hated it said it had no power. I borrowed it once, and he was right. It had no torque at low to moderate rpm. I couldn't bring my self to wind it tight enough to where it's hp was. He traded it for a Cummins Dodge. I don't think any gas pickup will pull 10000 lb and get better that 10 mpg. And that said I don't think newer diesels will get better than 12 mpg. Thats the difference in btu's 20% The first power strokes, and Cummins will beat 12 towing 10000 lb.

 

[John M]

Then he had a problem with it!!The 6.0 Im refering to is a diesel, in case youre thinking gas.

 

[CJ_1080]

Sounds like it has different gears in the rear! That can make a world of difference for both power and fuel mileage! Just food for thought.

 

[bassndeere]

2000, gas 3/4 ton 4wd auto, 4.10 gears, 210,000 miles. Just got back in from a road trip to KS, averaged 11.45 mpg over 6 full tanks. trailer empty going up, and full coming down. Around town empty, 15/16, trailer get 11/12, loaded gets 8/10. Gotta use common sense, gets the job done.

 

[Mopower]

I'd like a newer Duaramax to replace my 95 Powerstroke. But I hear conflicting mileage data. Some say 20+. Some say 10-12. My Ford is a F-250 2 wheel drive 5 speed stick and I pulled off 23.5mpg las year on a road trip. Usually 20. 15-16 hauling my Moline UB on a 25ft gooseneck highway. I once hauled about 13K# on my gooseneck from Chicago, Ill to Lansing, MI and pulled off 13.5mpg. Hesitant to give up my stickshift, but Duramax/Allison combo feel goooood!