Reply
 
Thread Tools Search this Thread Display Modes
 
Old 03-07-2012, 01:05 PM   #29
4 Rivet Member
 
phbarnhart's Avatar
 
2012 25' FB Eddie Bauer
Eugene , Oregon
Join Date: Sep 2010
Posts: 411
Images: 14
@Bob: I'm pretty sure that it is a locking rear diff (automatically) and yes, its a 4wd.

@Herrick: Yes, the Eddie Bauer has 16" wheels so it's a little taller than normal but that actually works pretty well with where the hitch receiver is on the Suburban. Once I fill the fresh tank it's (by the specs, mind you) around 6000lbs. Then we add clothes, food, the small generator (if going boon docking), and a few toys for the kids. I don't know the weight of all of the dishes and the like, but I was pretty careful about picking out light items. I would be pretty surprised if we end up over 6500lbs but I'm planning on finding out soon.
__________________

__________________
phbarnhart is offline   Reply With Quote
Old 03-07-2012, 01:18 PM   #30
CLOUDSPLITTER "Tahawas"
 
ROBERT CROSS's Avatar

 
2003 25' Classic
Zanadude Nebula , WNY
Join Date: Jun 2007
Posts: 11,153
Images: 1
@Bob: I'm pretty sure that it is a locking rear diff (automatically) and yes, its a 4wd.

G80 is the option code for the locker.

Bob
__________________

__________________
PFC.....

“After all these years the reason I continue to love Thanksgiving.....I still sit at the kids table.”
RLC

Sandra wanted to go to Cleveland on vacation,
but I’m the Husband, so we went to Cleveland.
RLC
ROBERT CROSS is offline   Reply With Quote
Old 03-07-2012, 01:37 PM   #31
4 Rivet Member
 
phbarnhart's Avatar
 
2012 25' FB Eddie Bauer
Eugene , Oregon
Join Date: Sep 2010
Posts: 411
Images: 14
Excellent, thanks Bob.
__________________
phbarnhart is offline   Reply With Quote
Old 03-07-2012, 01:45 PM   #32
4 Rivet Member
 
phbarnhart's Avatar
 
2012 25' FB Eddie Bauer
Eugene , Oregon
Join Date: Sep 2010
Posts: 411
Images: 14
Update: Apparently the 3.08 rear-end is in an 8.5" housing and the 3.42 gears will not fit in that. GM doesn't sell a complete 3.42 housing (just the individual parts) but they do sell the 3.73 housing complete. So the guy has some of his contacts at the wrecking yards looking around for a complete 3.42 set-up.
__________________
phbarnhart is offline   Reply With Quote
Old 03-07-2012, 02:59 PM   #33
CLOUDSPLITTER "Tahawas"
 
ROBERT CROSS's Avatar

 
2003 25' Classic
Zanadude Nebula , WNY
Join Date: Jun 2007
Posts: 11,153
Images: 1
IMHO.... if your serious about changing, go for the 3.73, you would be hard pressed to notice the difference going to the 3.42. And remember the front differential needs the up-grade too.

Bob
__________________
PFC.....

“After all these years the reason I continue to love Thanksgiving.....I still sit at the kids table.”
RLC

Sandra wanted to go to Cleveland on vacation,
but I’m the Husband, so we went to Cleveland.
RLC
ROBERT CROSS is offline   Reply With Quote
Old 03-07-2012, 03:05 PM   #34
Wise Elder
 
Jammer's Avatar
 
2010 30' Classic
Vintage Kin Owner
South of the river , Minnesota
Join Date: Dec 2009
Posts: 4,119
I have the 3.73 rear in my pickup and the 4.10 rear in my 'burb. They have the same transmission but the 'burb has a bigger engine.

The only difference is that the 3.73 leads to more hunting between 3rd and 4th on hills with the trailer (I have the 4 speed transmission, not the newer six speed). I don't notice a difference in noise level or fuel economy.

Things may be a little different with the 6 speed transmission, but in general, if you're doing a significant amount of towing, you'll want a lower (numerically higher) ratio rear. 3.73 would be fine if that's what's available, I would think, 4.10 probably ok too, 4.31 might be too much of a good thing but maybe not.
__________________
Jammer is offline   Reply With Quote
Old 03-07-2012, 04:42 PM   #35
4 Rivet Member
 
phbarnhart's Avatar
 
2012 25' FB Eddie Bauer
Eugene , Oregon
Join Date: Sep 2010
Posts: 411
Images: 14
My understanding is that the 6-speed has made some of the traditional wisdom about which rear-end ratio to go with a little less applicable because the availability of more gears means that you're more likely to have the right one available.

That said, I may very well end up with the 3.73, especially if the mechanic can't find a suitable set of 3.42s!
__________________
phbarnhart is offline   Reply With Quote
Old 03-07-2012, 04:53 PM   #36
Rivet Master
 
dznf0g's Avatar

 
2007 30' Classic
Oswego , Illinois
Join Date: Jul 2010
Posts: 9,402
Images: 5
Quote:
Originally Posted by phbarnhart View Post
My understanding is that the 6-speed has made some of the traditional wisdom about which rear-end ratio to go with a little less applicable because the availability of more gears means that you're more likely to have the right one available.

That said, I may very well end up with the 3.73, especially if the mechanic can't find a suitable set of 3.42s!
Well, IMO, it made the issue of 3.73 vs. 3.42 less of an issue in your weight class.
__________________
-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 03-07-2012, 05:06 PM   #37
CLOUDSPLITTER "Tahawas"
 
ROBERT CROSS's Avatar

 
2003 25' Classic
Zanadude Nebula , WNY
Join Date: Jun 2007
Posts: 11,153
Images: 1
Quote:
Originally Posted by phbarnhart View Post
....a suitable set of 3.42s!
One more time....two suitable set's.

IMHO..a lot to spend for .34 of one revolution.
Any math geeks out there?

Bob
__________________
PFC.....

“After all these years the reason I continue to love Thanksgiving.....I still sit at the kids table.”
RLC

Sandra wanted to go to Cleveland on vacation,
but I’m the Husband, so we went to Cleveland.
RLC
ROBERT CROSS is offline   Reply With Quote
Old 03-07-2012, 05:24 PM   #38
Chief Chili Cook
 
newroswell's Avatar
 
2010 30' Flying Cloud
Bakersfield , California
Join Date: Feb 2009
Posts: 738
Quote:
Originally Posted by ROBERT CROSS View Post
One more time....two suitable set's.

IMHO..a lot to spend for .34 of one revolution.
Any math geeks out there?

Bob
Think of it as 9% more torque in every gear. But yeah, with the 6 speed, it means that on any given hill, you may be in 4th instead of 3rd at the same speed & RPM...

I'm with the not sure you have a problem and this isn't a minor expense group.
__________________
The NSA -- The only part of the government that listens.
newroswell is offline   Reply With Quote
Old 03-07-2012, 05:35 PM   #39
4 Rivet Member
 
phbarnhart's Avatar
 
2012 25' FB Eddie Bauer
Eugene , Oregon
Join Date: Sep 2010
Posts: 411
Images: 14
@ Bob: Yeah, I know I need to change the front and back, I thought that my use of "set" followed by a plural "3.42s" showed that. I guess that since each end actually needs a set of gears it wasn't clear. Anywho, I'm hoping that they can find a front/back gearing set from a single vehicle.

@ newroswell: I noticed on my trip to Montana and back last fall that I didn't quite have enough power to cruise on the freeway in 5th but that 4th was more than was necessary. I'm thinking that 9% would be just about right. What I do know is that I had to drop to 2nd on a few of the mountain passes because 3rd was, again, just by a little bit, unable keep up momentum.

My real concern was about the durability of the 3.08 gears/housing as compared to the 3.42 or 3.73. It seems that the housing is smaller on the 3.08 but I don't know if that matters all that much. Anyway, I'm exploring my options right now.
__________________
phbarnhart is offline   Reply With Quote
Old 03-07-2012, 05:45 PM   #40
Rivet Master
 
dznf0g's Avatar

 
2007 30' Classic
Oswego , Illinois
Join Date: Jul 2010
Posts: 9,402
Images: 5
I still say try it the way it is and see if it is comfortable for YOU, performance wise. There's plenty of time later to swap out gears (yes, 2 sets!)

If you were trying to pull a 30'er or a 34'er, I'd be much more concerned about durability, etc. Not so much with a 25'er.
__________________
-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 03-07-2012, 05:53 PM   #41
CLOUDSPLITTER "Tahawas"
 
ROBERT CROSS's Avatar

 
2003 25' Classic
Zanadude Nebula , WNY
Join Date: Jun 2007
Posts: 11,153
Images: 1
Quote:
Originally Posted by dznf0g View Post
I still say try it the way it is and see if it is comfortable for YOU, performance wise. There's plenty of time later to swap out gears (yes, 2 sets!)

If you were trying to pull a 30'er or a 34'er, I'd be much more concerned about durability, etc. Not so much with a 25'er.
X2

Bob
__________________
PFC.....

“After all these years the reason I continue to love Thanksgiving.....I still sit at the kids table.”
RLC

Sandra wanted to go to Cleveland on vacation,
but I’m the Husband, so we went to Cleveland.
RLC
ROBERT CROSS is offline   Reply With Quote
Old 03-07-2012, 05:53 PM   #42
4 Rivet Member
 
phbarnhart's Avatar
 
2012 25' FB Eddie Bauer
Eugene , Oregon
Join Date: Sep 2010
Posts: 411
Images: 14
@ dznf0g and Bob: That's kind of why I'm doing this now. I did a 2000 mile trip from Eugene, OR to Helena, MT (plus a some around Montana) trip in October before I put her to bed for the winter. What I learned from the trip is that there's a very good reason that the tow package comes with the 3.42 gearing; it's only a little bit lower, but a little bit seems like all that would be needed to keep the transmission from shifting all the time, even while cruising.

I do appreciate the advice though, basically, if I may paraphrase, you're saying that I'm not really hurting anything by towing with the 3.08 but I may be more comfortable with the 3.42 or 3.73 so it's basically a judgement call about the cost v. my personal towing comfort.
__________________

__________________
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


Similar Threads
Thread Thread Starter Forum Replies Last Post
My next project is a basket case... InsideOut Vintage Kin 142 10-19-2013 10:18 PM
Doing full monte on my '58 Traveler Chlyman 1958 Traveler 77 06-13-2013 08:36 PM
5 year search, we got it! Sodbust 1972 Overlander 23 03-24-2012 09:34 PM
Towing Garyj Tow Vehicles 6 03-08-2012 05:53 AM


Virginia Campgrounds

Reviews provided by




Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -6. The time now is 12:16 AM.


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.