Reply
 
Thread Tools Search this Thread Display Modes
 
Old 06-26-2012, 09:43 PM   #29
Aluminut
 
Silvertwinkie's Avatar
 
2004 25' Safari
. , Illinois
Join Date: Feb 2003
Posts: 10,334
Quote:
Originally Posted by dznf0g View Post

I DO THINK you will see a 10% fuel penalty....I've compared them myself. But like my daddy used to say...there are some things more important than fuel mileage.
The difference in MPG between 3.73s and 4.10s is undetectable when towing. If there were a method to detect a delta in MPG between the two gear sets when towing, it would be far south of that 10%...maybe 1%?

Keep in mind we're talking a truck (moving brick), towing a mult-ton trailer, and unless you drive it (any rear gear size) 40-45mph, you are not going to get great MPG. I regularly get 11-12mpg towing about 7000lbs with 4.10s, keeping the engine in the sweet spot of about 60mph. The RPMs are a couple hundred RPMs more than with 3.73s and wear is a non-issue IMHO.

Also someone said that the engine would rev into redline. Just looked at my truck and it goes to about 7k RPM and there is no redline....though I'd like not to have get to 6k rpm. What's more, with tow/haul on, to minimizes downshifting.

My truck as I said is an 04, with a 4 speed tranny. Your results can and will vary.
__________________

__________________
Computers manufactured by companies such as IBM, Compaq and millions of others are by far the most popular with about 70 million machines in use worldwide. Macintosh fans note that cockroaches are far more numerous than humans and that numbers alone do not denote a higher life form. -NY Times 11/91
Silvertwinkie is offline   Reply With Quote
Old 07-07-2012, 05:11 PM   #30
Rivet Master
 
Steve Bryant's Avatar

 
1991 34' Limited
Wichita , Kansas
Join Date: Nov 2008
Posts: 738
Images: 7
Pappy,
Have you figured out what you're going to do about the rear axle ratio?

Steve
__________________

__________________
Steve Bryant is offline   Reply With Quote
Old 07-11-2012, 08:57 PM   #31
2 Rivet Member
 
Pappy's Avatar
 
2006 25' Classic
Floyds Knobs , Indiana
Join Date: May 2005
Posts: 88
Steve ,

It will be the 4.10 axle.
Involved in the Haggling part right now not much fun.
Plus it will have to be ordered and no delivery before the middle of
October.

Pappy
__________________
Pappy is offline   Reply With Quote
Old 07-12-2012, 09:37 AM   #32
Rivet Master
 
Steve Bryant's Avatar

 
1991 34' Limited
Wichita , Kansas
Join Date: Nov 2008
Posts: 738
Images: 7
Pappy, thanks for the update. Keep us posted. I'd like to see a picture of the new truck when you get it!

Steve
__________________
Steve Bryant is offline   Reply With Quote
Old 07-12-2012, 12:50 PM   #33
Rivet Master
 
Ridgerunner3's Avatar
 
2002 25' Safari
Fountain Inn , South Carolina
Join Date: Sep 2011
Posts: 659
Images: 11
Pappy, I have a 2012 Chevy 2500HD 4X4 with 6.0 engine and 3.73 diff. I traded a 2010 for the 2012. Many 6.0 owners, including me, notice that the mpg improve when the truck reaches around 25000 miles. Mobil 1 synthetic oil also helped with mpg on the 2010. So far I am running the GM Dexos oil in the 2012 but plan to switch to Mobil 1 at about 20000 miles. Non-ehanol gas improved mpg with the 2010. I have not tried non-ethanol in the 2012 yet.

The 2012 2500HD is a great truck. I am certain you will be very happy with it.
__________________
Bud
Ridgerunner3 is offline   Reply With Quote
Old 07-16-2012, 01:23 PM   #34
Rivet Master
 
dznf0g's Avatar

 
2007 30' Classic
Oswego , Illinois
Join Date: Jul 2010
Posts: 9,410
Images: 5
Quote:
Originally Posted by Ridgerunner3 View Post
Pappy, I have a 2012 Chevy 2500HD 4X4 with 6.0 engine and 3.73 diff. I traded a 2010 for the 2012. Many 6.0 owners, including me, notice that the mpg improve when the truck reaches around 25000 miles. Mobil 1 synthetic oil also helped with mpg on the 2010. So far I am running the GM Dexos oil in the 2012 but plan to switch to Mobil 1 at about 20000 miles. Non-ehanol gas improved mpg with the 2010. I have not tried non-ethanol in the 2012 yet.

The 2012 2500HD is a great truck. I am certain you will be very happy with it.
Mobil 1 5W-30 is a Dexos spec oil. Dexos is not a brand....it is a spec. You will find many brands of oils which are dexos licensed and approved. Dexos spec is significantly more robust than even the new GF5 spec. Google Dexos for a list of approved oil manufacturers.
__________________
-Rich-

"If the women don't find you handsome, they should at least find you handy." - Red Green
dznf0g is offline   Reply With Quote
Old 07-21-2012, 09:52 PM   #35
2 Rivet Member
 
Pappy's Avatar
 
2006 25' Classic
Floyds Knobs , Indiana
Join Date: May 2005
Posts: 88
Bought my truck today but not the Gas one!

After all the discussion about Gas 6.0 liter with a 3.73 and 4.10 I ended up with a Diesel instead. GMC dealer said I couldn't get a gasser until mid october and no 4.10's to be had. Started looking at Chevys but no 4.10's either. Wife wanted to test drive a 3.73 one more time to see if we could settle for it instead. I drove it then she drove it. We were on a slight up hill run and at 3500 rpm the thing just felt like it hit a wall or stalled out at about 45mph and was going to take a lot more rpm. That was with it empty and not towing. My Titan would have easily ran that hill at under 2000rpm. The wife being the boss said forget this thing we are going to buy a diesel. I never argue with the wife. GMC 2500HD SLT Extended cab all Black. All it needed was some camping mirrors and a few skid plates so we have to wait until Tuesday to pick her up. We got the non z71 which is quite a task to find one with out that option. After driving both the z85 and z71 it was apparent to us that the z85 was the way to go for us and the Airstream.
Can't wait to go back to the Rockies and camp in those high altitude camping spots and put this Truck buying dilema in the rear view mirror.

Pappy
__________________
Pappy is offline   Reply With Quote
Old 07-22-2012, 09:28 AM   #36
Rivet Master
 
Steve Bryant's Avatar

 
1991 34' Limited
Wichita , Kansas
Join Date: Nov 2008
Posts: 738
Images: 7
Pappy,
This sounds like a good deal! My son has a 2003 GMC Duramax powered K2500 with crew cab and the Alison 1000, 3.73:1 axle ratio. He's had it since new and it's a great truck that now has about 250 k miles.

When you take delivery and you come off the euphoric high of getting a new vehicle, take some pictures and post them for us. I'm happy for you folks!

All my best,

Steve
__________________
Steve Bryant is offline   Reply With Quote
Old 07-24-2012, 11:26 PM   #37
2 Rivet Member
 
Pappy's Avatar
 
2006 25' Classic
Floyds Knobs , Indiana
Join Date: May 2005
Posts: 88
Smile Here it is

Drove it home from Nashville, TN where I found it. About 190 mile trip the computer said 22.1 mpg. Ran mostly at 60mph trying to follow the 500 mile break in procedure of running 55mph almost impossible without getting ran over. Next is mating it up with the Hensley, airstream etc I am sure there will be some more challenges ahead.

Pappy
Attached Thumbnails
Click image for larger version

Name:	IMG_0191.jpg
Views:	72
Size:	424.1 KB
ID:	163853  
__________________
Pappy is offline   Reply With Quote
Old 07-25-2012, 12:41 AM   #38
Rivet Master
 
Steve Bryant's Avatar

 
1991 34' Limited
Wichita , Kansas
Join Date: Nov 2008
Posts: 738
Images: 7
Great looking truck!!!

Now, we need a picture in a few weeks with it all hooked up the the Airstream!

All my best,

Steve
__________________
Steve Bryant is offline   Reply With Quote
Old 07-25-2012, 08:14 AM   #39
Rivet Master
 
dznf0g's Avatar

 
2007 30' Classic
Oswego , Illinois
Join Date: Jul 2010
Posts: 9,410
Images: 5
FYI, the 6" drop stinger for the Hensley is needed with the 3/4 ton GMs, in my experience. Nice truck BTW. I gotta say, (relative to some of my other posts) money aside, The Duramax 2500HD Silverado I have now for the company ride, is awesome with the 30' AS.
When I do buy, I'm really going to have to struggle with the decision vs. $$$.
__________________
-Rich-

"If the women don't find you handsome, they should at least find you handy." - Red Green
dznf0g is offline   Reply With Quote
Old 07-26-2012, 09:47 PM   #40
2 Rivet Member
 
Pappy's Avatar
 
2006 25' Classic
Floyds Knobs , Indiana
Join Date: May 2005
Posts: 88
Hensley stingers

I was wondering about the stinger. Luckily I have the 4 and the 6 inch.
The Nissan was 19.5 inches off the ground and the GMC is 20.5. I used both stingers on the Nissan. The 6 to start with but after several years I tried the 4 inch and the ground clearance was better and camper level was a little nose down on one and a little nose high on the other. But only slightly I think the springs may have sagged just enough to make the 4 inch work the last few years. Tomorrow if I can stand the heat I may get her hooked up just to see where I stand. Bad heart and heat are not a good combination. Still breaking her in almost got that 500 miles but not quite.

Pappy
__________________
Pappy is offline   Reply With Quote
Old 07-26-2012, 11:53 PM   #41
Rivet Master
 
dznf0g's Avatar

 
2007 30' Classic
Oswego , Illinois
Join Date: Jul 2010
Posts: 9,410
Images: 5
Pappy, wait till you have about 2000 towing miles on it and the Allison and powertrain control module have learned you driving style and load. Unbelievable difference. Smooth as silk powerband and gear selection.
__________________
-Rich-

"If the women don't find you handsome, they should at least find you handy." - Red Green
dznf0g is offline   Reply With Quote
Old 07-31-2012, 12:53 AM   #42
4 Rivet Member
 
phbarnhart's Avatar
 
2012 25' FB Eddie Bauer
Eugene , Oregon
Join Date: Sep 2010
Posts: 411
Images: 14
Yeah, the break-in period is a pain in the ass. You're going to love that truck for years to come.

Just in case others find this thread, I thought that I should share my experience with my 2012 6.0 with 3.73 rear-end and 6-speed. It does a great job of pulling my 25' Eddie Bauer... up hills even! From what I've seen, the 4.10 isn't really as necessary with the 6 speed as it was with the 4 speed.

You're going to love your new truck but the 6.0 gas w/3.73 would have worked great also.
__________________

__________________
phbarnhart is offline   Reply With Quote
Reply


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



Virginia Campgrounds

Reviews provided by




Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -6. The time now is 04:24 PM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, Jelsoft Enterprises Ltd.

Airstream is a registered trademark of Airstream Inc. All rights reserved. Airstream trademark used under license to Social Knowledge LLC.