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08-21-2012, 07:17 AM
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#21
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Senior Member
Join Date: Oct 2010
Location: Merrimack NH
Posts: 917
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$ 1800!!!!!!!!!!!!, the shop either assumes you have a 4x4 or they are replacing the whole rear end assembly, find another shop. 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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08-21-2012, 04:30 PM
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#22
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Senior Member
Join Date: Dec 2010
Location: North Idaho/Arizona
Posts: 5,446
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Quote:
Originally Posted by Seann45
The towing capacity that if left the factory with is the legal capacity for life.. no matter what changes you make... I found that out the hard way after being pulled over...
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Seann, I know this is especially true in Canada. A friend from Saskatchewan was pulling trailers from the factory to dealers in Canada. He was checked at the border with a large load on a flatbed and had to unhook right there. They wouldn't let him tow it in with his truck.
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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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08-21-2012, 06:37 PM
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#23
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Senior Member
Join Date: Oct 2010
Location: Merrimack NH
Posts: 917
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boatman-- I was looking through 2011 GM specs and can't find a optional tow package with 3.08's.( that would be standard rear gear and you can tow 5k max) Have you put the truck on jack stands (both rear wheels) and turned the drive shaft, with the truck in gear and counted 3+ revolutions to 1 for a tire. Reading info on other truck forums, it seems the gm stickers don't reconize some options like optional gear ratios. It would seem that if your sticker listed an optional tow package you would have 3.42 rear gears and if you had the max tow package you would have the max cooling package and posssibly 3.73's. Before spending big buck please confirm what you have. just trying to help 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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08-21-2012, 06:42 PM
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#24
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Site Team
Join Date: Nov 2010
Location: Virginia`s Eastern Shore
Posts: 17,093
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There should also be a code on the equipment sticker in the glove box telling which rear you have along with other options IIRC.
On edit, found this on the Silverado forum. Rear gear codes, not sure if this covers all years or not. This was from 2010, 1500.
GT5 Rear axle, 4.10 ratio
GT4 Rear axle, 3.73 ratio
GU4 Rear axle, 3.08 ratio
GU5 Rear axle, 3.23 ratio
GU6 Rear axle, 3.42 ratio
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2017 Coachmen Catalina 283RKS
2018 Ford F250 Super Duty 6.2l CCSB
2010 Jayflight 28BHS (sold)
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08-21-2012, 07:21 PM
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#25
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Senior Member
Join Date: Jul 2011
Location: St. Augustine
Posts: 132
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I agree with some of the others. I don't believe GM would put a towing package on a 3.08 geared truck. If it truly came with a towing package (frame hitch, trans cooler) I believe it should have at least a 3.42 and more likely a 3.73.
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2014 Jayco Jay Flight 33RLDS travel trailer, now seasonal in the Adirondacks, Honda EU3000 generator.
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08-21-2012, 07:33 PM
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#26
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Senior Member
Join Date: Oct 2011
Location: Central California
Posts: 2,283
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Like Crabman said, check the RPO codes in the glove box. Or there are VIN decodes available online that will tell you all build options if your truck.
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2020 Ram 1500 5.7L
2007 Chevy Duramax LMM/Allison (Sold)
2012 Jay Flight 29QBH (Sold)
2012 Jay Flight 26BH (Sold)
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08-21-2012, 07:58 PM
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#27
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Senior Member
Join Date: Sep 2011
Location: Luray, VA (central Shenandoah Valley of VA)
Posts: 1,430
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As a mechanic, I can tell you that gear changes involve disassembling and reassembling the axle, and the labor time of setting up the new gear clearances, which is generally more expensive than swapping out the whole undisturbed axle for another one of the desired ratio. So - I agree with Boss Wagon on making the swap.
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2003 Ford F-350 V-10 Crew Cab 4WD Long Bed
2004 Jayco Designer Medallion 29 RLTS 5th wheel
Bill, Gayle, Teddy (Jack Russell terrier), and Honey (Beagle)
Retired at last !
Nothing is foolproof to a sufficiently talented fool.
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08-22-2012, 02:17 PM
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#28
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Junior Member
Join Date: Oct 2011
Posts: 8
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Quote:
Originally Posted by Roy W.
I agree with some of the others. I don't believe GM would put a towing package on a 3.08 geared truck. If it truly came with a towing package (frame hitch, trans cooler) I believe it should have at least a 3.42 and more likely a 3.73.
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They can offer the towing package with the 3.08 gears because of the 6 speed transmission in the newer trucks. The ratio for towing with the new transmission and 3.08 gear is equal to or better than the 4 speed with 3.73 and 4.10 gears. Check this link for comparisons.
http://eogld.ecomm.gm.com/NASApp/dom...83&rpoid=39147
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08-24-2012, 02:05 PM
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#29
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Senior Member
Join Date: Jul 2011
Location: St. Augustine
Posts: 132
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I stand corrected. I guess a 6 speed with a 3.73 would be a real puller.
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2014 Jayco Jay Flight 33RLDS travel trailer, now seasonal in the Adirondacks, Honda EU3000 generator.
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08-24-2012, 07:07 PM
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#30
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Member
Join Date: Apr 2012
Location: North Texas
Posts: 31
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Thanks everyone. Yes, I am positive it has the tow pkg with trans cooler. It is a 6 speed trans and is rated as is at 6800 towing capacity,
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08-24-2012, 07:10 PM
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#31
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Member
Join Date: Apr 2012
Location: North Texas
Posts: 31
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I don't think 3.73s are even an option on this truck.
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08-24-2012, 07:12 PM
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#32
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Member
Join Date: Apr 2012
Location: North Texas
Posts: 31
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Thanks for all the info Quick. I'm just going to hang with what I have for awhile.
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08-24-2012, 08:51 PM
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#33
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Junior Member
Join Date: Oct 2011
Posts: 8
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Quote:
Originally Posted by Boatman
Thanks for all the info Quick. I'm just going to hang with what I have for awhile.
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If you get serious about changing the rear gear, check out www.performancetrucks.net. There is a lot of good info over there. Someone from your area could recommend a good shop that could do the swap for a decent price.
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