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| 06-07.5 LBZ & LLY Duramax Powertrain Discussion of components that are directly involved in the power production and all that is needed to get and keep the truck moving . Engine , Transmission Ect |
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07-11-2007, 11:31 AM
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eBay Motors
#1 (permalink)
| | Junior Member
Join Date: Jul 2007
Posts: 5
| Anyone have experience with Duramax vans?
Have any of you out there had any experience with a Duramax in a 2500/3500 Express or Savana? We're looking at one, but don't want to make a $40K mistake.
P!sses me off how much they knock the power down in the vans...
Thanks in advance, | 
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07-11-2007, 03:33 PM
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eBay Motors
#2 (permalink)
| | Senior Member
Join Date: Dec 2005
Posts: 233
| The power is knocked down because of the tranny.
My plumbing contractor has one. He loves it. | |
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07-11-2007, 07:12 PM
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eBay Motors
#3 (permalink)
| | Senior Member
Join Date: Jan 2007
Posts: 257
| one of my friends has one and loves it never had any problems with it and he said yah it doesnt have as much power but it works well. imo just put a stage 3 tranny and proogrammer
__________________ 2006 LLY with some miles
-EFI Live(Best Investment Ever!!!!)
-Turbo-Back RBP 4" with no muffler and my cat ran away 
-limo tinted windows all the way around except winsheild
-18"MKW M25 with 285/65/R18 Toyo A/T
-Afe replacement filter
-Cogneto Leveling Kit | |
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07-11-2007, 08:09 PM
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eBay Motors
#4 (permalink)
| | Junior Member
Join Date: Jul 2007
Posts: 5
| So does anyone know how they knock down the power in the vans? Programming? Turbo/Injectors? I'm surprised that the 4L85 tranny wouldn't take more than 420 Ft/Lbs... | |
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11-09-2007, 02:16 PM
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eBay Motors
#5 (permalink)
| | DuramaxForum Fanatic
Join Date: Jun 2007 Location: michigan
Posts: 342
| A friend of mine has an 06 and loves it, just wished it had the allison. Last time I talked to him he had over 200,000 and only had a turbo sensor or something like that go bad. besides that he loves it. 2500 extended chevy cargo van
__________________ 07 classic crew cab long bed
3.73 rear, stock tire size
bully dog w/outlook ,bully dog cold air and 5 inch turbo back, with 6 inch tip.
replaced stock tank with a 55 gallon aftermarket tank
5% tint on all windows, and "eyebrow" on front windshield.  | |
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11-12-2007, 07:03 AM
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eBay Motors
#6 (permalink)
| | Member
Join Date: Jul 2007 Location: Michigan
Posts: 36
| The van has a lower torque curve calibration. It has the same injectors and turbo as the pickup. Packaging is the problem. An Allison will not fit in the van. Some other engine changes were required to fit it into the van. The engine should last a very long time if it is kept as stock. | |
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11-25-2007, 05:22 AM
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eBay Motors
#7 (permalink)
| | Junior Member
Join Date: Nov 2006 Location: woodbridge,va
Posts: 8
|  I love mine
Yep I got a 06 and I love it, its got 128k on it now and only had a #8 injector replaced on it at around 23K I run 85% highway with it loaded near its gross weight most of the time and she gets 22-24 mpg at 60 mph. I found running above 60 you are just wasting fuel with this set up. I know if you run 70 your milage will be knocked down to 17-18 mpg and in my line of work fuel is my biggest expense I have.
set up is a, stock 3500 ext express with lly,4l85e, 3.73 limited slip | |
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11-25-2007, 01:45 PM
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eBay Motors
#8 (permalink)
| | Junior Member
Join Date: Jul 2007
Posts: 5
| Quote:
Originally Posted by phill0072  Yep I got a 06 and I love it, its got 128k on it now and only had a #8 injector replaced on it at around 23K I run 85% highway with it loaded near its gross weight most of the time and she gets 22-24 mpg at 60 mph. I found running above 60 you are just wasting fuel with this set up. I know if you run 70 your milage will be knocked down to 17-18 mpg and in my line of work fuel is my biggest expense I have.
set up is a, stock 3500 ext express with lly,4l85e, 3.73 limited slip | Wow...dropping highway speed from 70 to 60 gives you 5-7 MPG better? I'd be after a set of 3.42 gears YESTERDAY. 
Thanks for the replies, guys. | |
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11-25-2007, 02:28 PM
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eBay Motors
#9 (permalink)
| | Gear Jammer...
Join Date: May 2006 Location: Mt. Pleasant PA
Posts: 1,892
| I beleive the low power rating is due to no intercooler, there for there is no need for the big trans, if you cant make the engine live nder the higher power!
__________________ 05 Chevy 2500HD dark blue reg cab ZF-6 speed/W South Bend Clutch ,Power by EFI Live W/Dsp2 , PPE GT4094R, ATS CP3x2, Modified Volant intake, MBRP front pipe, 4" side pipe, Holley Blue lift pump, Isspro gauges,Cognito Braces, SD Centerlink, Caltracs, ATS Tie Rod Sleeves Best ET 12.53@ 109 mph 04.5 Chevy 2500HD, silverbirch, D/A, CC/SB , EFI live, SCIV w/ATS 5Star converter,McRat shim mod, Wicked Diesels modded FPR, Kennedy dual lift pump, Modified Volant intake, Cognito Braces,CUD tie rod Sleeves, EGR BLocker,Diamond eye Down pipe, 4" dual exhaust, Elocker, MA Tcase Fix, B&W GN Hitch Best ET 13.53 @ 101mph | |
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11-25-2007, 03:01 PM
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eBay Motors
#10 (permalink)
| | Junior Member
Join Date: Jul 2007
Posts: 5
| OK, stupid question, but...the Duramax in the vans has no intercooler????
I'm getting the feeling from some of these replies that the diesels in the Savana/Express vans don't live like they do in the trucks...is that right? | |
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