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10-18-2012, 04:26 PM
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#1
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Junior Member
Join Date: Oct 2012
Posts: 18
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Chevy 2500HD with 6.0 or 8.1 for 90% towing #6500 tt
We are settled on the 2500HD GM platform, 4.10 gearing, crew cab. The only thing left to decide is the engine: 6 or 8.1? We will be pulling the tt for 90% of the miles we travel with this rig, the remaining 10% around town, dump and occ to work (4 minute drive). What would you get? Is there any clear advantage in durability or maintenance between these two engines. Thanks for your time.
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10-18-2012, 04:30 PM
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#2
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Senior Member
Join Date: Jun 2010
Location: Forest
Posts: 634
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I would opt for the 8.1 but go with an axle ratio of 3.73 or the GM axle ratio in that range.
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10-18-2012, 04:59 PM
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#3
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Junior Member
Join Date: Oct 2012
Posts: 18
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Boss Wagon,
We live in the mountains, everywhere we go is up and down. And, the reason we are not going diesel is that we are only going to use this at a max of 5000 miles a summer, if that.
Would you still go with 3.73 gearing?
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10-18-2012, 06:00 PM
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#4
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Senior Member
Join Date: Jun 2010
Location: Forest
Posts: 634
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I agree the gas engine is the way to go for your use. Either engine would be okay. I don't think I'd want the 4.10 axle though, especially with the 8.1. I have always liked the gas torque monsters and feel they are the best choice for limited use. If a person is going to tow moderate to heavy trailers often and for alot of miles a year, diesel is the better choice. I believe diesels should be run hard and darn near daily for their longevity and cost effectiveness. At my place of work we have had several diesel pickups that were only used on a limited basis and the cost/maintenance per mile just wasn't justifiable in my opinion.
The 8.1 with the the 3.73 (or GM offering in that range) would be more than adequate and would offer a little better mpg when empty and less wear on the engine in the long haul.
I have a light trailer, 3500lbs and use a v-10 with a 3.73 axle, my capacity would be much greater with a 4.10 ratio, but I don't need it.
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10-18-2012, 06:22 PM
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#5
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Site Team
Join Date: Nov 2010
Location: Virginia`s Eastern Shore
Posts: 17,092
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Well explained by Bosswagon.
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2017 Coachmen Catalina 283RKS
2018 Ford F250 Super Duty 6.2l CCSB
2010 Jayflight 28BHS (sold)
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10-19-2012, 06:56 AM
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#6
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Member
Join Date: Apr 2011
Posts: 67
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I had a Yukon XL with 8.1 and 4.10. It turns a few more RPMs at highway speeds. I would recommend the 4.10 for heavy towing behind the 4l80 transmission. However, in the 2500HD, you will be getting the Allison, and I believe that 3.73 would be sufficient.
__________________
Dad of Four Girls
2011 Silverado CC 2500HD
2011 Jayflight G2 32BHDS
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10-19-2012, 08:16 AM
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#7
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Senior Member
Join Date: Oct 2010
Location: Merrimack NH
Posts: 917
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KCNM--Be sure to ask what transmission you will be getting with either engine, GM is not providing the Allision trans with all engines. Larry
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Larry & Rachel Demers 2013 F150 Eco Boost Super Cab 6.5 bed 6 sp. 3.31 4x4 White Hawk 28DSBH
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10-19-2012, 08:17 AM
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#8
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Senior Member
Join Date: Aug 2009
Location: Dallas, Texas
Posts: 788
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I towed 70K+ miles with a 2002 Suburban K2500 8.1 ltr with 4.10 gears. I still drive it to work every day. It is a strong and reliable engine and drivetrain. I have 150K miles on it and no engine or transmission service other than fluid changes.
If it is a dedicated tow vehicle, look for a 2500HD with 8.1 with 4.10 gears. That will provide the maximum tow rating for a gasser and allow for future camper "upgrades".
__________________
Russell
'13 Excel Winslow 34IKE
'12 GMC Sierra 3500HD
Previous RV's: '03 MobileScout Titan 29DBS; '01 Sunnybrook Lite 2708 SLE; '99 Coleman Utah
Previous TV's: '02 Chevy Suburban 2500 8.1 4.10; '99 Chevy Express 1500 5.7
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10-19-2012, 01:36 PM
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#9
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Site Team
Join Date: Nov 2010
Location: Virginia`s Eastern Shore
Posts: 17,092
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I could be wrong but I believe the Allison transmission was not available with the 6.0l and was an option with the 8.1l, standard with the Duramax. Not sure how they are working it today. The 8.1l engine was also only in a small percentage of the 2500`s built. 6.0 was the volume engine, followed by the Duramax then the 8.1 in a distant third. I saw the numbers one time and it was a very small percent for the 8.1, making them hard to find used. If you do a search for 2500`s on ebay or car sites you will be hard pressed to find an 8.1 available. I think I only saw a couple in all the trucks I looked at in my search. Of course ordering new would be different, but finding one on a lot may be difficult.
__________________
2017 Coachmen Catalina 283RKS
2018 Ford F250 Super Duty 6.2l CCSB
2010 Jayflight 28BHS (sold)
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10-19-2012, 04:53 PM
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#10
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Senior Member
Join Date: Jun 2010
Location: Forest
Posts: 634
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Crabman is right about finding an 8.1 used. I have searched on ebay for them in the past and rarely found any.
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10-19-2012, 09:31 PM
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#11
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Senior Member
Join Date: Dec 2010
Location: North Idaho/Arizona
Posts: 5,446
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You cant get an 8.1 new as the big block has been discontinued. GM is pushing the diesel for towing.
__________________
2011 Eagle 330RLTS with just about every option.
2017 Silverado 1500 4x4 5.3 with tow package. (no, we don't tow the Jayco with it.)
2018 Surveyor 265RLDS well equipped.
Life in the slow lane is still life.
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10-21-2012, 01:25 AM
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#12
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Senior Member
Join Date: May 2011
Location: Aldergrove British Columbia
Posts: 815
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I have overtaken trucks on hills while pulling my trailer with our 6.0L truck. Our trailer weighs about 6500 lbs loaded. It has the 373 rear end. In my opinion it is a perfect match.
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Richard
2011 Jay Feather Select 28U
2007 Silverado Crewcab LT 6.0L
Happily married and father of
two university students.
Cancer survivor
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10-22-2012, 02:20 AM
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#13
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Senior Member
Join Date: Jul 2011
Location: S.E. Wisconsin
Posts: 201
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With the 6.0L I average about 6.5mpg towing the 28bhs. If you will be doing alot of towing the diesel is the way to go. My truck and tt weigh out at just over 15,000lbs
__________________
2010 Jay Flight 28BHS
2007 Yukon XL 2500 6.0L 4X4
Equal-I-zer Hitch
Prodigy Brakes
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10-24-2012, 12:26 PM
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#14
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Junior Member
Join Date: Oct 2012
Posts: 16
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6500# TT? Seems like you would be fine regardless of what you picked if money is not an issue. In fact if that's what you're towing why not just go with a 1/2 Ton and save money. I'd only got with the 3/4 ton if you thought you were going to be upgrading to a bigger trailer...if that's the case I'd go with the Diesel....otherwise you are paying a really big premium for a diesel when there isnt a need. Diesels cost more to buy and maintain...diesel fuel is higher than gas but it can be justified if you are just towing. I guess it depends on how much you are towing.
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10-25-2012, 06:34 AM
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#15
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Junior Member
Join Date: Oct 2012
Posts: 18
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We found an '07 classic diesel with 160k miles for $16,000, well maintained and mostly highway miles. With this truck I figure we will spend $1500 less each year on fuel and what a difference to drive, can't believe the power. Haven't bought yet but seriously considering. Only worry is high miles even though it is diesel.
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