looking at new 4500/5500/6500 - Chevy and GMC Duramax Diesel Forum
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post #1 of 33 (permalink) Old 06-19-2019, 08:48 PM Thread Starter
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looking at new 4500/5500/6500

Anybody looked into towing weights on these trucks? Dealers don't have much in the way of info yet. Looked at a 4500HD CC 4X4 today-- very nice truck. We are thinking of trading our Pete 337 and the 2019 3500HD in on one if we can figure out which model will haul a 23K GVWR GN horse trailer safely. Anybody have any thoughts or opinions on this?
Come on Hook-em, help a fellow Texan out-- I know you probably know this stuff

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post #2 of 33 (permalink) Old 06-19-2019, 09:18 PM
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You might try this guide https://www.chevrolet.com/content/da...ring-guide.pdf but it does not look like it addresses the info you are looking for.

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post #3 of 33 (permalink) Old 06-20-2019, 05:34 AM
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Originally Posted by sambor View Post
Anybody looked into towing weights on these trucks? Dealers don't have much in the way of info yet. Looked at a 4500HD CC 4X4 today-- very nice truck. We are thinking of trading our Pete 337 and the 2019 3500HD in on one if we can figure out which model will haul a 23K GVWR GN horse trailer safely. Anybody have any thoughts or opinions on this?
Come on Hook-em, help a fellow Texan out-- I know you probably know this stuff
Just curious, why the move out of the Pete?

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post #4 of 33 (permalink) Old 06-20-2019, 02:14 PM Thread Starter
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Wife doesn't like driving it and refuses to get her CDL for it. Me personally I love the truck. A little bit of overkill with our trailers but sure is nice to know it is up to the task. She says if we get one of the new medium duty Chevys she will get her CDL for that because the interior and controls are just like her 3500.
From what I can figure from what GM has published, I believe that a 4500 will work. The 8 horse has a hitch weight of 3450 all loaded to max GVWR of 23K. The 4500 with the 430 rear is good for 34K. Truck curb weight is going to be around 11K after a flatbed is installed.

2019 Chevrolet 4500HD CC 4X4 Flatbed
2018 Chevrolet 1500 CC 4X4 High Country 6.2 liter
2019 Chevrolet 3500HD CC 4X4 Flatbed--SOLD
2011 Peterbilt 337 hauler with 360HP 8.3 Cummins--SOLD
1957 GMC 1 ton flatbed with 22K original miles.
3 different Kubotas
2003 Chevrolet 2500HD CC: 2011 Chevrolet 3500HD CC 4X4 and 2013 3500HD ex. cab 4X4-- all sold.
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post #5 of 33 (permalink) Old 06-21-2019, 03:37 AM
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You may want to wait for a 2020 as the towing weights are improved significantly. A 2020 3500 may do the job well.

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post #6 of 33 (permalink) Old 06-21-2019, 08:04 AM Thread Starter
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Not a bad Idea Henry. Wonder when the specs will be published for the weights. All 3 models use the same frames/engines etc. GM uses different trans and rear gears and some suspension changes to accommodate different weights. I would have thought the 4500 would have a higher GVWR. Not that much more than a 3500-- just better built for the weight.

2019 Chevrolet 4500HD CC 4X4 Flatbed
2018 Chevrolet 1500 CC 4X4 High Country 6.2 liter
2019 Chevrolet 3500HD CC 4X4 Flatbed--SOLD
2011 Peterbilt 337 hauler with 360HP 8.3 Cummins--SOLD
1957 GMC 1 ton flatbed with 22K original miles.
3 different Kubotas
2003 Chevrolet 2500HD CC: 2011 Chevrolet 3500HD CC 4X4 and 2013 3500HD ex. cab 4X4-- all sold.
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post #7 of 33 (permalink) Old 06-21-2019, 08:08 AM
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I would have thought the 4500 would have a higher GVWR. Not that much more than a 3500-- just better built for the weight.
4k lbs isn't much of a difference?

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post #8 of 33 (permalink) Old 06-21-2019, 08:44 AM
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Originally Posted by sambor View Post
Come on Hook-em, help a fellow Texan out-- I know you probably know this stuff
The advantage to the MD vs the 3500 has always been the load carrying capacity. Not so much in trailering. In fact, based on their published specs, many times it has less towing capacity than the 3500, but it will handle a much higher pin weight. Of which, the two go hand in hand.

Depending on what rear end/trans you choose, looking at the spec sheet for the MD, it shows GVWR of 15k / 16k / 16.5k
with a GCWR of only 26k / 30k
I suspect that 30k combined is NOT with the 4:30 rear you drove.

You're projected empty weight of 11k, only leaves 15k / 19k for a trailer...per the specs, towing less than the 3500.

It's not the same motor in the MD as the 3500....several things are different; turbo, lesser tuning output, etc.
As well as a different transmission too (depending on your option selected).
It's designed to get the load moving off the line.

Which is what the 2020 3500 is claiming with the 10-spd paired with the 3:42(?) rear vs the std 3:73 for the last 19 years....getting the load moving with ease.

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Use-ta Haves 2006-6.0 3500 WT DRW ExCab Flatbed, 2005-LLY 3500 LS DRW Crew Cab, 2002-LB7 3500 LS DRW Crew Cab
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post #9 of 33 (permalink) Old 06-21-2019, 10:25 AM
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30k trailer wont be an issue behind either of the 3 4500/5500/6500 chasiss..
I have a build sheet for a 6500HD with RDS2700 Allison 4.30 gears and 225/75/19.5 should put cruise @70mph [email protected] rpm
I was upper 60K for a RC 2wd 23.5K truck.. 4x4/CC pushing 80k
the print out is 22,940 GVWR with 8k/15.5k axles and a 26k GCWR.. big face palm. the dana S16-130 rear axle has a 50,000lb GVWR same with the RDS2500/rds2550 is the closest listed for 30/33k... that's off Allison's website...
IMO GM jipped us on the numbers game... and they have been doing it for a while now
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post #10 of 33 (permalink) Old 06-21-2019, 01:30 PM Thread Starter
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I looked at a 4500 with a 7500# front axle(standard on a 4X4) and 11000# rear. It does have the 430 rear set. Trans is the A1750HS.

The truck I am estimating will weigh 11K curb( all loaded without trailer) It is a CC, 4X4 cab-chassis and weighs 9100#. Still have to install a flatbed on it.

As for the engine, it is "detuned" from the L5P to 350HP to meet emissions requirements for this class of trucks according to GM literature.

Too bad you can't get air susp. on a 4X4 even on just the rear.

2019 Chevrolet 4500HD CC 4X4 Flatbed
2018 Chevrolet 1500 CC 4X4 High Country 6.2 liter
2019 Chevrolet 3500HD CC 4X4 Flatbed--SOLD
2011 Peterbilt 337 hauler with 360HP 8.3 Cummins--SOLD
1957 GMC 1 ton flatbed with 22K original miles.
3 different Kubotas
2003 Chevrolet 2500HD CC: 2011 Chevrolet 3500HD CC 4X4 and 2013 3500HD ex. cab 4X4-- all sold.
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