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Old 01-25-2008, 06:32 PM   #15
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New Suburbans...

I posted this earlier this week, but unbelievably the new 2500 subs only come with a 3.42 rear end. Not good for towing...get an older one.
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Old 01-25-2008, 09:03 PM   #16
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The barn doors (side-hinged) were discontinued after '02.
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Old 01-26-2008, 05:30 AM   #17
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Exclamation More On Gm Hitch..

Check your GM hitch carefully.


http://www.airforums.com/forums/f464...s-34603-4.html
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Old 01-26-2008, 09:46 AM   #18
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Great info. Moosetags, thanks for the offer to come and see. We may do that although i have a trip coming up this week. I am still confused about the best rear end ratio.
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Old 01-26-2008, 10:18 AM   #19
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The 2500 Subs in the the model years you are looking at came with either 3.73 or 4.10 rear end ratios. In effect, the drive shaft turns 3.73 times or 4.10 times to turn the reat axle once. The higher the number the lower the rear end is geared. The lower ratio (higher number) is the better puller, but fuel economy is not quite as good as the higher ratio (lower number) rear end.

In your situation, either ratio will work fine.

Brian
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Old 01-26-2008, 05:53 PM   #20
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It's under control now. I certainly appreciate all of your outstanding assistance. Time to go car shopping! All the best - Evan
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Old 11-27-2010, 03:15 PM   #21
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20110 1500 Suburban 3.45 w.tow package How big of an airstream can I tow

Just bought a 2011 1500 LTZ Suburban with auto ride and tow package. Max tow rating is 8000lbs. How big of an airstream can I tow with a Hensley hitch. First choice is a Classic Limited 27 FB. Our Second choice is a 25 FB Serenity . We need expert help to decide.
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Old 11-27-2010, 04:30 PM   #22
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Quote:
Originally Posted by joeifagroup View Post
Just bought a 2011 1500 LTZ Suburban with auto ride and tow package. Max tow rating is 8000lbs. How big of an airstream can I tow with a Hensley hitch. First choice is a Classic Limited 27 FB. Our Second choice is a 25 FB Serenity . We need expert help to decide.
I think you'll find both those trailers to be well within the 8000 lb limit. My 30' Classic, loaded and ready to go runs over the scales at 8500 lbs.

I think you're fine.
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Old 11-27-2010, 09:51 PM   #23
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Quote:
Originally Posted by SafariSS View Post
I posted this earlier this week, but unbelievably the new 2500 subs only come with a 3.42 rear end. Not good for towing...get an older one.
But the new ones also have a 6-speed automatic, so deeper rear gears are now beside the point.
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Old 11-27-2010, 10:11 PM   #24
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But the new ones also have a 6-speed automatic, so deeper rear gears are now beside the point.
This is true. 3.42 is fine with the new 6 speeds. More selections for ratios to match load and speed. You'll use 4th and 5th most of the time in flats and rolling hills.
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Old 12-12-2010, 09:19 PM   #25
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We have just upgraged from our '98 2500 Sub with the 454 engine, 4.10 rear & 10,000 lb touring pacing to a very low mileage, '03 Yukon XL's with the 8.1L (496 cubic inches), again with the 4:10 posi-traction rear & 10K trailer tow package -- both 4X4.
The 454 had PLENTY of hp / torque to pull our '07 25' Safari FB but after 175K+ miles it was time to move on.
After investigation, we choose not to go new since the biggest block now availabe is the 6L -- which someone correctly commented gets its HP and torgue much higher int he RPM range.
As they say, "there is no substitution for cubic inches". The 8.1L engine has both in spades!
Regards,
TKNELLE
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Old 12-13-2010, 05:32 AM   #26
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Congratulations. I think you'll find as I do that it's a great tow vehicle.
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