06coachmantt
washington state
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My question is i am looking at a 5th wheel that weighs around 11k not scale weight just a guess any one who owns a 32 to 34 foot 5th wheel and towing with a silverado duramax/allison stock no mods in the 03 range what is your average speed going up passes in the 6% grade?
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Ron Nielson
Berryton, KS
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My truck is a 2008 Chevy crew cab. MY 5th wheel is about 12K when traveling. If it's not too hot, I can go up at pretty much any speed I want. However, there's no reason to do that. I usually travel on flat land about 62 or so and then on grades I usually drop to 55 or so, the engine temp/trans temp being the controlling factor. 2008 Chevy has a 6 speed and I believe the 2003 is a 5 speed. In any case, keep your rpms up to 2200 (more or less) when pulling a grade. Engine will run a little cooler and so will your transmission.
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3 dog nights
Central, Virginia USA
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" silverado duramax/allison "
2500 or 3500 ?
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glazier
Kentucky
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You will be able to maintain the towing speed limit with a 11 or 12K fiver on normal 6% highway grades. Just don't push your foot through the firewall or you will get the temperature up unnecessary to do the job.
2010 Jayco Eagle Super Lite 31.5 FBHS
08 Chevy 2500HD LTZ Duramax CC/SB/4X4
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Reese 18K Signature Series
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06coachmantt
washington state
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Thanks for the reply.My silverado is a silverado 2500hd cc standard box.I will be adding air bags. new shocks and tires are already done a fewweeks ago.all services are done on time.
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SH
Lynden, WA
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06coachmantt wrote:Thanks for the reply.My silverado is a silverado 2500hd cc standard box.I will be adding air bags. new shocks and tires are already done a fewweeks ago.all services are done on time.
Hello neighbor...I sent you a PM with some information that may be helpful!
Best Wishes!
2011 Heartland Big Country 3450TS 
2007.5 Chev LMM Duramax/Allison
2010 FLHTC Electra Glide Classic Red Hot Sunglo
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SH
Lynden, WA
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SH wrote:06coachmantt wrote:Thanks for the reply.My silverado is a silverado 2500hd cc standard box.I will be adding air bags. new shocks and tires are already done a fewweeks ago.all services are done on time.
Hello neighbor...I sent you a PM with some information that may be helpful!
Best Wishes!
Well, I tried but your account won't accept forum PM's! Sorry!
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larry barnhart
wenatchee. wa usa
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depends on the rear ear ratio. 4.10 or 3.73
chevman
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2001 35 ft avalon alpenlite RK
2005 3500 2wd duramax CC dually
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06coachmantt
washington state
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3.73 my understanding is 3.73 is the only ratio you get from the factory for those years.
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christopherglenn
a little over an hour from Yosemite
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All duramax came with 3.73.
The 03's were the least powerful duramax's, but you should still be about 50 on a 6% uphill.
The frontal area (wind drag) of the trailer will determine if you are in the mid 40's, or high 50's.
2007 Chevrolet 3500 CC/LB Duramax/Dually 4X4 Mine r4tech, Reese Signature Series 18k +slider, duratrac, titan 62 gallon, diamond eye, Cheetah 64
2011 Keystone Fusion 405 TrailAir & Triglide, Centerpoint, gen-turi, 3 PVX-840T, XANTREX FREEDOM SW3012, G614
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