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01-25-2012, 01:21 PM
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#1
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Senior Member
Workhorse Chassis Owner
Join Date: Nov 2005
Location: chokoloskee, fl 34138
Posts: 717
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Workhorse/DuraMax Conversion
Has anybody installed the chevy duramax diesel in the gas workhorse chassis?
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2016 Dynamax DX3
USCG Ret BMCM
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01-25-2012, 04:32 PM
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#2
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Senior Member
Join Date: Nov 2001
Location: Dalton Ma/Crystal River Fl
Posts: 574
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Don`t believe the Allison is built to take the torque.
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01-25-2012, 06:40 PM
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#3
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Senior Member
Join Date: Feb 2003
Location: Jarrell, TX 76537
Posts: 4,501
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Quote:
Originally Posted by Spoonman
Don`t believe the Allison is built to take the torque.
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Buzzzz... wrong answer. The Durmax comes with the Allison 1000 with the grade brake option.
Allison /Duramax
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Dale
AKA - Oemy
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01-25-2012, 06:47 PM
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#4
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Senior Member
Join Date: Nov 2001
Location: Dalton Ma/Crystal River Fl
Posts: 574
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I stand corrected,assumed it was desaigned for the 8.1.sorry
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01-25-2012, 07:06 PM
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#5
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Senior Member
Join Date: Feb 2003
Location: Jarrell, TX 76537
Posts: 4,501
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The Allison 1000 was also mated to the 8.1 in the 2500HD truck line.
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Dale
AKA - Oemy
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01-26-2012, 05:29 AM
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#6
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Senior Member
Monaco Owners Club Workhorse Chassis Owner
Join Date: Nov 2009
Posts: 1,363
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Quote:
Originally Posted by Spoonman
I stand corrected,assumed it was desaigned for the 8.1.sorry
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transmissions are not designed to engines. Look at the T56... comes in vettes, vipers, mustangs...etc. 
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01-26-2012, 03:28 PM
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#7
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Moderator Emeritus
Winnebago Owners Club Workhorse Chassis Owner Coastal Campers Carolina Campers
Join Date: Jan 2000
Location: Conway, SC
Posts: 23,641
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Quote:
Originally Posted by WeatherTodd
transmissions are not designed to engines.
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 For purposes of discussion in this topic, Workhorse, the power train is matched to the proper size Allison transmission.
(New) Allison has just released a new 1000 series transmission, the 1350, which allows for a GCWR of 30,000 pounds similiar to the 2000 series transmission which is also rated for 30,000 pounds.
On our Class 6 vehicles the transmission must be capable of handling the input torque from the engine therfore designing a transmission to match the torque is essential.
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03 Adventurer 38G, Workhorse W22
F&R Track Bars, Safety+ , Ultrapower, Taylor Extremes, SGII
TST 507, Blue Ox, SMI, Koni FSD, CrossFire
RV/MH Hall of Fame - Lifetime Member
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01-26-2012, 09:51 PM
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#8
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Senior Member
Official iRV2 Sponsor
Join Date: Jun 2008
Location: Centralia, WA
Posts: 1,216
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Stay tuned..... 
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01-26-2012, 10:00 PM
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#9
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Member
Monaco Owners Club
Join Date: Mar 2010
Location: indiana
Posts: 88
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I was looking at putting a diesel in my zr2 pickup... decided not to because the trans are very different.. a gas engine likes to turn 3 to 5 k rpms... a diesel likes to turn 1.5 to 3 k rpms... shift points are all wrong... But if you change the trans or at least reprogram it would be a good swap.
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99 Beaver Monterey 36' 300hp Cat
99 VW Bug TDI diesel 5spd toad
06 VW Jetta TDI pk2 DSG
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01-26-2012, 10:12 PM
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#10
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Senior Member
Country Coach Owners Club Solo Rvers Club iRV2 No Limits Club
Join Date: May 2011
Location: Vancouver, WA
Posts: 37,725
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Quote:
Originally Posted by TDiGuy
I was looking at putting a diesel in my zr2 pickup... decided not to because the trans are very different.. a gas engine likes to turn 3 to 5 k rpms... a diesel likes to turn 1.5 to 3 k rpms... shift points are all wrong... But if you change the trans or at least reprogram it would be a good swap.
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Along with possibly a rear axle and gear change to take the torque and lower RPM.
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2009 45' Magna 630 w/Cummins ISX 650 HP/1950 Lbs Ft, HWH Active Air
Charter Good Sam Lifetime Member, FMCA,
RV'ing since 1957, NRA Benefactor Life, towing '21 Jeep JLU Rubicon Ecodiesel
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01-28-2012, 05:50 AM
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#11
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Senior Member
Workhorse Chassis Owner
Join Date: Nov 2005
Location: chokoloskee, fl 34138
Posts: 717
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JonBrazel are you going to tells something, I waiting, I serious interested.
__________________
2016 Dynamax DX3
USCG Ret BMCM
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01-28-2012, 06:30 AM
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#12
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Senior Member
Official iRV2 Sponsor
Join Date: Jun 2008
Location: Centralia, WA
Posts: 1,216
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We have a customer that is interested in having this conversion done....will let you know if it comes to fruition.
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01-28-2012, 01:41 PM
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#13
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Senior Member
Damon Owners Club Workhorse Chassis Owner Forest River Owners Club Ford Super Duty Owner
Join Date: May 2005
Location: Parker, CO
Posts: 3,251
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Good deal Jon, if it can be done, I'd imagine you could do it provided someone with enough desire and $$$ wants it done. Probably many big obstacles to overcome. I asked the mechanics who changed my 8.1 if they could put a Duramax in there and he said he doubted it would fit through the top of the doghouse hole.
Then you gotta find a diesel generator that would fit where the 5500 Onan is also.
This would be awesome project to put in your blog though.
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Max49
2018 Forest River Georgetown F-53
'08 Jeep Wrangler Toad
Denver, Colorado
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01-29-2012, 05:21 AM
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#14
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Senior Member
Workhorse Chassis Owner
Join Date: Nov 2005
Location: chokoloskee, fl 34138
Posts: 717
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when they installed the new workhorse 8.1 in my w22 last sept. they rolled the axel out and it went in from below, 2 days.
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2016 Dynamax DX3
USCG Ret BMCM
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