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Anybody out there using the new generation engine in a 3500 Express Cargo Van?

I am considering the purchase of one and I am looking at overall costs versus a 6.0 gas engine.

I've also heard that the GVWR is over 10000lbs in the 3500 Express Cargo Van with the new generation Duramax. That might actually be a problem with my usage application.

Thanks in advance for your input.:Nothing_f
 

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hmmm I doubt the GVWR is 10,000 pounds unless you get just a chassis-cab dually in the van body. For the pickup trucks, the 3500 single rear wheel GVW is 9900 pounds, Id imagine the 3500 van would be around there or slightly lower...I dont know for sure tho. I think a while ago there was one fellow who has a Duramax Express/Savanna. It was red if I remember correctly...

--Ben

btw in order to play nice with the 4L80-E tranny (no Allison option), the Dmax in the vans is an LLY rated at 250hp and I think 450 ft lbs of torque. I beleive it doesnt have an intercooler either. Still turbocharged, just no intercooler. I think the guy who had one said he did got better gas mileage than his 6.0 gasser, but not an AMAZING increase in MPG...
 

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btw in order to play nice with the 4L80-E tranny (no Allison option), the Dmax in the vans is an LLY rated at 250hp and I think 450 ft lbs of torque. I beleive it doesnt have an intercooler either. Still turbocharged, just no intercooler. I think the guy who had one said he did got better gas mileage than his 6.0 gasser, but not an AMAZING increase in MPG...
Aren't those ratings less than even the LB7?
 

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yes, the reason its derated so much is because the 4L80-E cant take any more torque
 

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they have the 4L80/85-E. I dont know which one, I think they are more or less the same tranny.
 

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I thought that the 85 had some beefier internals (I don't know what). That's what they use behind the 8.1 in the 'burb. Thought they might use it in the van, too. Just curious.
 

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The van is intercooled.
 

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Anybody out there using the new generation engine in a 3500 Express Cargo Van?

I am considering the purchase of one and I am looking at overall costs versus a 6.0 gas engine.

I've also heard that the GVWR is over 10000lbs in the 3500 Express Cargo Van with the new generation Duramax. That might actually be a problem with my usage application.

Thanks in advance for your input.:Nothing_f
The highest GVWR I have found for the full body vans is 9,600 Lb on the 3500, which gives you a payload of 4,130 Lb on the work van. (3,591 for the passenger van)

They do have a low volume Cutaway Dually with 14,000 Lb GVWR (At least they did through the 2005 MY - They called it "The Workhorse") but I believe you have to buy it from an upfitter.

The Duramax Diesel engine is available only in the Cargo Van and Commercial Cutaway Vans and is rated at 250 Hp @ 3200 rpm and 460 lb-ft @ 1600 rpm.

The available transmissions are the 4L60-E for GVWR below 8,600 Lb. and the 4L80-E for 8,600 Lb and above GVWR. If I remember correctly, the 4L85-E tranny is available only in the Commercial Cutaways with GVWR of 10,000 Lb or higher.

The Commercial Cutaway Vans are available in 3500 with SRW or DRW on 139-inch, 159-inch, and 177-inch wheelbase models.
 

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are you sure you can get a Duramax van with the 4L60-E? I think all Dmax vans come with the 4L80
 

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where is there room on the van for an intercooler? I thought I heard somewhere that the van didnt have one
 

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road test

Has someone seen an road test about the express with the duramax?
and if so, was it on the internet?
 

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are you sure you can get a Duramax van with the 4L60-E? I think all Dmax vans come with the 4L80
Sorry for the confusion!

What I meant to say was that the 4L60-E is one of the transmissions availabe in the van. I dind't intend for it to sound as if it was for the Duramax. SORRY!:eek::
 

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2006 chevy 3500 w/ duramax dyno proven 619hp & 1087trq

so everyone understands that i know the difference. i currently own a 2006 LBZ truck with Allison trans. dad owns a 2003 LB7 and i just purchased a 2019 L5P. i know the difference. to clear the air on this one because i own 1. A 2006 Chevy express 3500 SWR with 6.6L duramax diesel with 4l85E. dana 70s rear end. the van is rated at 10,000lbs GVWR. it does have a inter cooler. i have 401,000 miles as of 2/13/2020. The 4L85E is rated at a impressive 300hp and 690lb torque. it does come with a LBZ motor detuned to 250/450. with hard to find parts to fit correctly you can make it a monster. i am a mechanic by trade so i have had to modify everything i buy to make work on the van. i have EFI live auto-cal tuner which brings the rating back to stock LBZ 365hp and 650 torque and adds another 230 and 500 on top. yes the trans did slip when turned up but surprisingly did well. i now have a 5k built 4L80E, EGR delete, up pipes manifolds, down pipe, 64mm stealth turbo charger, 165gpm fass fuel system, trans cooler, and a bunch of other ****. its a awesome reaction when a stock Camaro pulls up next to the "work Van" and gets smoked lol. any questions you have ask away. and FYI i have pulled a toy hauler 28 foot attitude with 3 dirtbikes and a quad in back. yes it will tow anything needed all day.
 

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Reviving a 14 year old dead thread has got to be a record. Actually a stock 4L85E is only rated to 460 torque. The Supermatic 4L85E that is in the GM performance catalog is rated to 690 torque.
 
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to clear the air on this one because i own 1. A 2006 Chevy express 3500 SWR with 6.6L duramax diesel with 4l85E. dana 70s rear end. the van is rated at 10,000lbs GVWR.
There needs to be some more air-clearing... The 3500 vans have a 9600 GVW; check the door sticker.

The new vans have a 9900 GVW option, which is the only way to get the 2.8 liter Duramax. I do not know what model year GM introduced that option, or if it was available before the 2.8L engine was available.
 

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There needs to be some more air-clearing... The 3500 vans have a 9600 GVW; check the door sticker.

The new vans have a 9900 GVW option, which is the only way to get the 2.8 liter Duramax. I do not know what model year GM introduced that option, or if it was available before the 2.8L engine was available.
We have been rounding the number up to 10K for like 20 years now. The 2.8 which was available starting in 2017 is only rated for 7,000# and to get the 10K rating since then you need to have the 6.0 gas.
 

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That's tow rating, not GVW.
Even GVW we have always rounded it up to 10K with 3500 van for simplicity. A couple hundred pounds difference when you are talking 9,000+ is nothing. When you start talking 1,000# difference then you need to pay attention to what you are doing.
 
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