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8.1 Liter 2500 HD pickups???

by , Posted to on 03/17/2005 11:11 AM | "Quote" | "Quick Reply" |

Joined: 05/11/2004
Location: ND
I am looking into buying a different truck, because the 01 Chevy with the 5.3 is not going to handle my horse trailer this summer. I am curious if anyone out there has a 3/4 ton chevy with the 8.1 liter and the Allison tranny. What kind of mileage are you getting empty and pulling. Any info would be appreciated.
Re: 8.1 Liter 2500 HD pickups???
by on 03/17/2005 11:23 AM | Reply #1 | "Quote" | "Quick Reply" |

Joined: 01/23/2002
Location: ND
We have a 2004 3/4 ton with the 8.1 litre in it with the Allison tranny. Excellent motor and a bulletproof tranny! We get about 8mpg with it when we are not pulling and about 5mpg when we are pulling it. Plenty of power if you are willing to feed it!
Re: 8.1 Liter 2500 HD pickups???
by on 03/17/2005 11:59 AM | Reply #2 | "Quote" | "Quick Reply" |

Joined: 05/11/2004
Location: ND
Wow thats not near what I was told that they would get. I was talking to a dealer the other day and he told me that the 8.1 liters are getting better mileage than the 6 liter 3/4 ton pickups. Thanks for the info. Do you think that this is about average or do you think he was telling a tall tale.

Snow,
If I understand correctly, you are a chevy dealer right? What have you heard from customers?
Re: 8.1 Liter 2500 HD pickups???
by on 03/17/2005 12:56 PM | Reply #3 | "Quote" | "Quick Reply" |

Joined: 02/13/2004
Location: SC
Get a Ford F350 diesel, 16.5 mpg hwy, 12 pullin HEAVY trailer. Have they got the allison tranny bug fixed on the chevies?? just curious
Re: 8.1 Liter 2500 HD pickups???
by on 03/17/2005 1:19 PM | Reply #4 | "Quote" | "Quick Reply" |

Joined: 12/16/2001
Location: ND
I had a 2001 2500HD Crew with the 8.1 and Allison and just got a 2005. With my 2001, I typically drove 75-85mph (what can I say...I speed a bit). My mileage was a pretty consistent 12mpg. The 2001 had a 4:10 rear end. Towing my boat (2025 Lund Pro V) last year out to Lake Michigan I got between 9 & 10 at 70-75mph. The best I ever got was 14 (nice day, now wind, towing nothing). The worst 5. The 5 was pulling a 32foot high profile 5th wheel and my boat into a 35-50 mph wind. Even pulling those things into the wind I was easily able to do 70-75. The power is AWESOME. Coming back without the wind I got 8. I have no idea what it got in city driving because most of my driving is highway. I'm sure it wouldn't be very good though. I only have about 3000 miles on my new 2005 and it appears I'm getting between 10 and 12 on the highway so far. My 2005 has a 3.73 rear end. Good Luck. If you don't like the smell and mess of a diesel, you'll love the 8.1. I'd probably go with the Duramax, but I ice fish out of my truck and they're still too noisy and choke out anyone down wind of you.
Re: 8.1 Liter 2500 HD pickups???
by on 03/17/2005 1:22 PM | Reply #5 | "Quote" | "Quick Reply" |

Joined: 12/16/2001
Location: ND
btw....I never ever had a tranny problem. The Allison's a pretty cool tranny. When you press that tow/haul button, the truck becomes a totally different truck. It's nice to have a tranny and engine that actually work together.
Re: 8.1 Liter 2500 HD pickups???
by on 03/17/2005 1:47 PM | Reply #6 | "Quote" | "Quick Reply" |

Joined: 05/11/2004
Location: ND
Originally I was planning on buying a Duramax, but with Diesel prices and the initial cost of the Diesel trucks is figuring to be a bit high for my price range. For a used truck with less than 50,000 miles there seems to be about a 7-$10,000 difference. Plus Diesel is about 20 cents a gallon higher in price than gasoline. I still haven't made up my mind and that is why I am asking these questions. I figured that I would ask people that use there rigs for multiple uses...Hunting, Fishing, & work.
Re: 8.1 Liter 2500 HD pickups???
by on 03/17/2005 2:23 PM | Reply #7 | "Quote" | "Quick Reply" |

Joined: 01/23/2002
Location: ND
I worked for a guy with the 8.1. Pulling a skidder or driving with just the box loaded with tools it seemed to always be around 8-10. I think the only way i would buy one is if i planned to tow large stuff all the time. My dad has the 6.0 and it shifts a lot during pulling but when you unhook you do get better milage. He has pulled a 5th wheel all the way to alaska, and this winter to texas and back and the truck hasnt had any troubles.
Re: 8.1 Liter 2500 HD pickups???
by on 03/17/2005 2:56 PM | Reply #8 | "Quote" | "Quick Reply" |

Joined: 02/07/2005
Location: MN
bowhuntin,
Yup,I'm a dealer and "yup" someone is triing to off their 8.1.There has been pushrod issue's on some around 30k,the tranny is Bullet proof unless there has been a tire upgrade(larger size)from factory spec's,LT245.The larger tire will change the shifting pattern,thus cause excessive wear.Now there are other option's and ways around the larger tires.Any question's shoot me a e-mail "www.northstaroutdoors.com"

Sold a paving company a bunch of HD's a few years back w/8100,now they are in the same truck but running the duramax... Worth the money if you drive alot or pull/payload is heaving.
Re: 8.1 Liter 2500 HD pickups???
by on 03/17/2005 2:57 PM | Reply #9 | "Quote" | "Quick Reply" |

Joined: 02/07/2005
Location: MN
bowhuntin,
This is Snow...
Re: 8.1 Liter 2500 HD pickups???
by on 03/17/2005 5:05 PM | Reply #10 | "Quote" | "Quick Reply" |

Joined: 12/21/2003
Location: ND
I would also recommend the duramax diesel. I got back last night from a trip to Missouri with an '03 one ton dually. We were pulling a 32' stock trailer and made around 8 miles to the gallon. The power is unbelievable. We drove between 75 and 80 most of the way(we had places to be) and the pickup handled it with no problems.
Re: 8.1 Liter 2500 HD pickups???
by on 03/18/2005 08:33 AM | Reply #11 | "Quote" | "Quick Reply" |

Joined: 05/11/2004
Location: ND
I know that I would prefer a duramax, but I am a little worried to say the least to buy a used one, due to all the misuse of chips and reprogramming. Maybe I shouldn't be but..... I know if I buy a duramax, that I will be putting one in, but at least I will know I haven't abused the motor or tranny.

Snow,
I couldn't get an e-mail to send yesterday.
Drop me a line at wranglers_@hotmail.com
I will reply back to you. Thanks...
Re: 8.1 Liter 2500 HD pickups???
by on 03/18/2005 09:09 AM | Reply #12 | "Quote" | "Quick Reply" |

Joined: 01/08/2003
Location: ND
Snow,
Offline question for you, have there been alot of problems with the door hinges on the new chevy's? My 05 Durmax 3/4 HD already has sprung one door and the other is about to go. No major wind or nothing.
 

Good Luck and Good Fishin'

Eric T


Re: 8.1 Liter 2500 HD pickups???
by on 03/18/2005 11:46 AM | Reply #13 | "Quote" | "Quick Reply" |

Joined: 02/07/2005
Location: MN
walynut,
Not that I know of? I'll check into it and let you know if anything pop's up.
Re: 8.1 Liter 2500 HD pickups???
by on 03/18/2005 12:29 PM | Reply #14 | "Quote" | "Quick Reply" |

Joined: 01/08/2003
Location: ND
Thanks, Tim

Little annoyed, 5000 miles and $700.00 damages for no real reason. Never new that three little marks in the door from hitting the hinges cost so much. Maybe I need to get into the bodywork buss. LOL
 

Good Luck and Good Fishin'

Eric T


Re: 8.1 Liter 2500 HD pickups???
by on 03/18/2005 12:41 PM | Reply #15 | "Quote" | "Quick Reply" |

Joined: 10/26/2002
Location: ND
A diesel would be far better for pulling than a gas. A friend of mine just went to Oklahoma and averaged 25 mpg with a 2004 Dodge Cummins that was with the box full with a tool box and 2 Combine rotors. He said that we also get about 30 mpg when he drives it decent. He has the Edge performace chip in it to get this kind of mileage though.
Re: 8.1 Liter 2500 HD pickups???
by on 03/18/2005 3:18 PM | Reply #16 | "Quote" | "Quick Reply" |

Joined: 10/27/2003
Location: MN
Can a guy really get 25+ mpg with a Diesel and a chip?...boy if so, I made a big mistake trading my SUV for a car to save some money on gas....
Re: 8.1 Liter 2500 HD pickups???
by on 03/18/2005 3:53 PM | Reply #17 | "Quote" | "Quick Reply" |

Joined: 05/11/2004
Location: ND
mallard man,

Has your buddy had any problems with the tranny? Is it an Auto or Manual? There are some really good rebates right now on Dodges, but I have always been a little leary of their trannies.

One of my buddies chipped up a 1999 ford 7.3 and his first trip after chipping it, he went to Arizona and averaged 23mpg for the whole trip. Evidently conditions were perfect, because after he got back he has been only averaging about 18-19mpg, which is still good. Do all cummins get that good of mileage? I have heard the newer ones get worse mileage than the old...
Re: 8.1 Liter 2500 HD pickups???
by on 03/18/2005 4:49 PM | Reply #18 | "Quote" | "Quick Reply" |

Joined: 10/26/2002
Location: ND
He has a 6 speed manual in it. He hasnt had any trouble with the tranny in it and he beats the heck out of everything. He has a 2004 i believe. My dad just bought a 2005 and the dealer told him that the 2004 get better fuel milage though. The Edge programmer he has also gives it 75 more horsepower but can be adjusted to more but if it is moved up anymore he would need to change to a 4" exhaust system.
Re: 8.1 Liter 2500 HD pickups???
by on 07/11/2009 4:34 PM | Reply #19 | "Quote" | "Quick Reply" |

Joined: 07/11/2009
Location: in
You're in luck.  I have a black 2003 suburban with an 8.1 liter engine that I have decided to sell.  I had a race trailer I pulled about 10,000 milies and the 8.1 liter engine never blinked.  You can't even tell you're pulling a trailer - even up hills.  This has been the best truck I have ever owned.  I sold my trailer 3 years ago and I have been trying to rationalize why I am keeping it.  But now I am driving  my kids all over the place and it's time.  I have 103 K miles on it and it runs like the day I bought it.  I live in Indiana.  Give me a call if you want to talk.  My cell is 317 496-8567.  Jim
Purcy22
Re: 8.1 Liter 2500 HD pickups???
by on 07/11/2009 10:50 PM | Reply #20 | "Quote" | "Quick Reply" |

Joined: 07/14/2003
Location: ND
mallard man Said:
A diesel would be far better for pulling than a gas. A friend of mine just went to Oklahoma and averaged 25 mpg with a 2004 Dodge Cummins that was with the box full with a tool box and 2 Combine rotors. He said that we also get about 30 mpg when he drives it decent. He has the Edge performace chip in it to get this kind of mileage though.


Thats the bigges bunch of hogwash I've read in a while, there's no way in hell that he can get 25mpg emty moreless 30mpg as he claimed. Although I'm an avid outdoorsman my number one passion is trucks and there is NO, NOTTA, NOTHING MADE IN A 3/4 or 1 Ton truck that even get close to those claims! NEVER HAS, NEVER WILL! the most fuel effiecent diesels made were the mid production 7.3L Powerstrokes (96'-98'), a good number of the Cummins for about 94"-02", and some of the early Duramax's could see a tad over 20 give or take with optimal conditions and keeping your foot out of it, that means 60mph. Crank em up to 75mph and they lose about 3mpg! For reference, a 97' PSD F250 extd cab long box with stock tires (265s), 3.55 gearing, a topper, with a custum burned SCT 5 position chip and full exhaust went from a 17mpg truck to a 20mpg truck so long as you drive at 65mph or less. this is a constant and achievable mileage, not a "I was able to hit 25mpg one time will driveing 55mph, with a tail wind, and heading down hill" type of claim.

Enough of that, that 8.1L is a good solid engine and got similar mileage to the early versions of the 6.0 Vortech V-8 and the Ford V10s. Depending on the configuration of the truck you should see 13-14 on long highway runs 10-12 in town and 6-8 towing anything substantial. They have a lot of gunt down low and breath realitively well when you wind them up a bit in the RPM range. I personally have owned a V10 for the last 5 years and run with a buddy that has the 8.1. comparitively speaking the 8.1 is on average about 1mpg thirstier than my V10 under the same conditions. it does how ever seem to have a little more grunt down low in the RPMS but looses that advantage once there wound up a bit. this is primarly due to that extra 1.3L of displacement. his only complaint is for what ever reason, since the day it came off the lot, it's always wanted a quart of oil every 3k miles. I don't think they are all this way but it runs like champ and has been very good. You can't go wrong with one as long as you can come to terms with the fuel mielage.

I've never personally driven his with a load but have followed him to the lake and although he's pulling about 4-5k lbs less than I am (I'm grossing about 22k), I've yet to see any hills he hasn't been able to run 65mph back up to the top, this includes trips between Minot and Bismarck and the two hills west of garrison heading towards douglas bay and indian hills.

I will add that we've both noticed that our trucks use LOTS of fuel ideling. We can drive to the lake 50-70 miles pulling the train and use a 1/4 tank of fuel, but the 4 trips to the boat landing and back, hooking and unhooking the trailers, and a trip over to get bait, a total of about 10 miles, uses another 1/4 tank of fuel.
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Posted On: 03/17/2005 11:11 AM
34433 Views, 53 Comments

Tags: 8.1, liter, pickups, 0, chevy, 5.3, buying, horse, different, going
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Region: North Dakota

Categories: Outdoor Sports > Trucks and Truck Accessories
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