Advertisement
If this is your first visit, be sure to check out the FAQ by clicking the link above. You may have to register before you can post: click the register link above to proceed. To start viewing messages, select the forum that you want to visit from the selection below.

Home Who's Online Today's Posts HP Calculator CompD Gift Shop Mark Forums Read
Go Back   Competition Diesel.Com - Bringing The BEST Together > Tech- General Diesel > Diesel Conversions
Register Members List Timeslips EFI Live Library Invite Your Friends FAQ Calendar Mark Forums Read

Diesel Conversions Powerplant swaps, Repowers, etc.

Closed Thread
 
Thread Tools
Old 07-19-2017, 02:20 PM   #1
deerefanatic

Name: deerefanatic
Title: Always learnin...
Status: Not Here
Join Date: Aug 2011
Location: Colon, MI
Member`s Gallery
Posts: 566
2006 Chevy 3500 Duramax-Cummins Swap

Yep. You read this right. The Duramax is coming out!

After a lot of messing around, the LBZ left me walking. To be honest, I've not been crazy impressed with the LBZ since I bought it, and the fact that it has now failed me twice is the last straw.. Truck has 230k miles on it, and last fall the headgaskets blew.. Changed em, put in ARP's. Had the heads checked by the local machine shop. Put in 3" downpipe and deleted the EGR equipment while I was in there. Fast forward to 2 weeks ago, pulling my goosneck through the mountains in West Virginia. Truck kept overheating on hills, I was down to 40 mph to keep the engine under 240. Fan clutch was kicking in, water pump replaced last summer. Thermostats a few years ago. Next morning I made it 5 miles from the hotel when water temp skyrocketed and headgaskets (I'm assuming) let go and left me sitting on the highway in a puddle of water on the ground. For the record, my tow tune was a stock tune with EGR delete, my daily driver tune was a fuel mileage tune. Don't think I ever went wot with the fuel mileage tune ever..

I still have the 12v Cummins that was in my old 88 Chevy Dually conversion that I parted out. Looks like I'm going to be using Screamin' Seeman's motor mounts, destroked adapter plate, and work with them on a controller (since I already have the factory TCM and wire harness, I don't need the entire destroked setup). This motor was twinned, and made 502hp @ 1900 rpm; 1250 ft-lbs @ 1850 rpm (Rear wheel measurements on a superflow). It was a dream to tow with.

Friend of mine that does transmissions is going to go through the Allison for me and build it. Goerend converter and Alto G3 clutches.

Any other build advice from anyone? Anyone looked at figuring out how to defuel a 12v for shifts to help the Allison stay together?
__________________
-Matt

2006 Chevy 3500 CC Dually LBZ - Died again
2005 Mercedes E320 CDI - Best car I've ever owned
2004 Chevy 3500 8.1 - Gas hog
88 Chevy C3500 Cummins, RIP
84 Mercedes 300SD Diesel. Old reliable..
64 Oliver 1850 Cummins. 227hp, for now...

Last edited by deerefanatic; 07-19-2017 at 02:22 PM.
 
Old 07-31-2017, 09:50 PM   #2
deerefanatic

Name: deerefanatic
Title: Always learnin...
Status: Not Here
Join Date: Aug 2011
Location: Colon, MI
Member`s Gallery
Posts: 566
Got the LBZ pulled out of the truck this weekend. Got the tractor partially stripped down. I'll be pulling the motor out of it next to put in the truck..
__________________
-Matt

2006 Chevy 3500 CC Dually LBZ - Died again
2005 Mercedes E320 CDI - Best car I've ever owned
2004 Chevy 3500 8.1 - Gas hog
88 Chevy C3500 Cummins, RIP
84 Mercedes 300SD Diesel. Old reliable..
64 Oliver 1850 Cummins. 227hp, for now...
 
Old 07-31-2017, 10:50 PM   #3
weazel
 
weazel's Avatar

Name: weazel
Title: 5th gear killer
Status: Not Here
Join Date: May 2008
Location: Mason, TX
Member`s Gallery
Posts: 2,252
Subbing..
__________________
88 Chevy Half Ton/ LB7 conversion
08 Chevy 3500HD, efi, 5” exhaust
 
Old 07-31-2017, 11:10 PM   #4
JWhite
 
JWhite's Avatar

Name: JWhite
Title: Trained monkey
Status: Not Here
Join Date: Aug 2009
Location: F Burg Ohio
Member`s Gallery
Posts: 1,817
How much do you want for the lbz?

Should probably do more than a clutch upgrade to that trans if you ever plan to turn it up more.
__________________
GMC with a LiLLY
 
Old 08-01-2017, 01:42 AM   #5
223

Name: 223
Title: Green Behind the Ears
Status: Not Here
Join Date: Oct 2015
Member`s Gallery
Posts: 79
Ditch the Allison for good
 
Old 08-01-2017, 05:54 AM   #6
TheBac
 
TheBac's Avatar

Name: TheBac
Title: UPS guy
Status: Not Here
Join Date: Oct 2009
Location: Mid Michigan
Member`s Gallery
Posts: 2,344
Quote:
Originally Posted by JWhite View Post
How much do you want for the lbz?

Should probably do more than a clutch upgrade to that trans if you ever plan to turn it up more.
I was just thinking the same things. Id love to have an LBZ to build.
__________________
Tom
"BBT" -- 2003 GMC CC/SB 4x4 12.14@111.15
"KLESHAY" -- 2000 C5 Corvette -- the toy

2017 Buick Regal 2.0T -- the DD

 
Old 08-01-2017, 12:13 PM   #7
JWhite
 
JWhite's Avatar

Name: JWhite
Title: Trained monkey
Status: Not Here
Join Date: Aug 2009
Location: F Burg Ohio
Member`s Gallery
Posts: 1,817
Quote:
Originally Posted by 223 View Post
Ditch the Allison for good
There's no reason to, it'll hold everything his setup can throw at it when set up correctly.

Unless these conversion guys haven't got the software worked out to be compatible, then a built 48re would out weigh the headache.
__________________
GMC with a LiLLY
 
Old 08-01-2017, 06:31 PM   #8
223

Name: 223
Title: Green Behind the Ears
Status: Not Here
Join Date: Oct 2015
Member`s Gallery
Posts: 79
Quote:
Originally Posted by JWhite View Post
There's no reason to, it'll hold everything his setup can throw at it when set up correctly.

Unless these conversion guys haven't got the software worked out to be compatible, then a built 48re would out weigh the headache.


its not about holding the power
 
Old 08-01-2017, 10:59 PM   #9
Inbred Inline
 
Inbred Inline's Avatar

Name: Inbred Inline
Title: Bastard child builder
Status: Not Here
Join Date: Dec 2014
Location: SE Michigan
Member`s Gallery
Posts: 370
Air conditioning is tricky but doable-still better than the GMT 900 trucks, I can look up my diagrams and give you pointers. Not sure on the trans stuff as I am a manual guy, I have built a couple swaps and I am a couple hours east of you in Clinton, MI. Feel free to PM me
__________________
1994 Chevy RCLB C1500 6BT NV4500
2011 GMC CCLB 3500HD LML - STOCK
1992 Club Car, Kubota z430 "Inbred Inline Jr"
2000 Chevy CCSB C3500 3.0 Pro Stock 4x4 "Inbred Inline"-broken junk
 
Old 09-27-2017, 02:44 PM   #10
deerefanatic

Name: deerefanatic
Title: Always learnin...
Status: Not Here
Join Date: Aug 2011
Location: Colon, MI
Member`s Gallery
Posts: 566
Cummins is sitting in the truck. I have the "freightliner" style hi mount ac bracket, and ordered a Sanden 4666 A/C compressor to bolt to it. Have a 28si J180 mount 200 amp alternator that I bought brand new for that department. Have to figure out yet where to mount the tensioner with this setup. Also hoping to figure out the belt routing this weekend.

Hot pipe and turbo mount from Crazy Carls just got delivered today. Going to test fit with my dummy turbochargers (as the ones I'm going to use are out getting some goodies done to them) hopefully this weekend.

Thinned the LBZ wiring harness. I'm keeping the basic dash sensors plus fuel temp, intake temp and boost. Might as well use the ECM and my V2 for datalogging on this Cummins.

I'll try to get pics soon.
__________________
-Matt

2006 Chevy 3500 CC Dually LBZ - Died again
2005 Mercedes E320 CDI - Best car I've ever owned
2004 Chevy 3500 8.1 - Gas hog
88 Chevy C3500 Cummins, RIP
84 Mercedes 300SD Diesel. Old reliable..
64 Oliver 1850 Cummins. 227hp, for now...
 
Old 09-27-2017, 02:45 PM   #11
deerefanatic

Name: deerefanatic
Title: Always learnin...
Status: Not Here
Join Date: Aug 2011
Location: Colon, MI
Member`s Gallery
Posts: 566
In the meantime, you can check out this video. My Duramax to Cummins swap! Part 1 - YouTube
__________________
-Matt

2006 Chevy 3500 CC Dually LBZ - Died again
2005 Mercedes E320 CDI - Best car I've ever owned
2004 Chevy 3500 8.1 - Gas hog
88 Chevy C3500 Cummins, RIP
84 Mercedes 300SD Diesel. Old reliable..
64 Oliver 1850 Cummins. 227hp, for now...
 
Old 10-02-2017, 05:19 PM   #12
Gorrila550
 
Gorrila550's Avatar

Name: Gorrila550
Title: Rookie
Status: Not Here
Join Date: Dec 2014
Member`s Gallery
Posts: 25
sound like a fun project.
__________________
1999 Ford F550 1993 5.9 cummins with A518 trans
 
Old 10-02-2017, 08:08 PM   #13
SmokeShow
 
SmokeShow's Avatar

Name: SmokeShow
Title: Too Much Time
Status: Not Here
Join Date: Apr 2006
Member`s Gallery
Posts: 4,715
Not bad. Sounds like you're doing it right so that's a positive. Hope you get the allison to play nice with the 12Valve.
__________________
Mitch

IG: @_mitch_ratliff_

'14 Ford F150 FX4 SuperCrew, w/ 3.5L EcoBoost, bone stock

83 GMC K30 CC SB 4WD awaiting D/A chassis swap
 
Old 12-29-2017, 12:16 AM   #14
Bersaglieri
 
Bersaglieri's Avatar

Name: Bersaglieri
Title: Ron Swanson's Brother
Status: Not Here
Join Date: Jan 2008
Location: Ohio
Member`s Gallery
Posts: 1,957
Watching to see how the Allison works with the 12 valve.
__________________
2013 - ISBe - Aisin - AAM
1997 - 6BT - G56 - Dana "Overworked and Underpaid"
2002 - 6BT - 47RH - Sterling [Excursion]
1994 - LT1 - 4L80e - Moser
 
Old 12-30-2017, 09:05 PM   #15
odieub
 
odieub's Avatar

Name: odieub
Title: Too Much Time
Status: Not Here
Join Date: Nov 2007
Location: Leitchfield, KY
Member`s Gallery
Posts: 923
There is a guy local to me that put a 6 speed Allison behind a 12v. Was in a 06 superduty though, has good results. Believe he told me got all stuff from Howard's Allison.
__________________
95 1500 rc sb 2wd p7100 24v auto, ats 5 star, suncoast kit, dtt billit input, sperico, fun tire eater. In pieces
95 2500 2wd rclb nv5600 500k 5x.012 ddp 887 pump, #11 plate hx35/40-14cm
16 3500 4wd aisin cclb dually flatbed, toy hauler
 
Old 12-30-2017, 09:08 PM   #16
pushlar84
 
pushlar84's Avatar

Name: pushlar84
Title: pushlar84
Status: Not Here
Join Date: Dec 2009
Location: new york
Member`s Gallery
Posts: 658
I’ve put many Allison’s behind cummins
I own three. I think it’s a awesome combo
60,000 on my 05 since the 6 speed swap running compound chargers
I have another in my pulling truck- p-pumped 6.7 for the last 9 years
__________________
2001 Ram- fuel by Northeast Diesel, 2.6 ED, Allison 1000. Haisley cam, engine & trans built in house
 
Old 12-30-2017, 09:38 PM   #17
DDually
 
DDually's Avatar

Name: DDually
Title: Still spooling..
Status: Not Here
Join Date: Nov 2009
Member`s Gallery
Posts: 2,095
Quote:
Originally Posted by pushlar84 View Post
I’ve put many Allison’s behind cummins
I own three. I think it’s a awesome combo
60,000 on my 05 since the 6 speed swap running compound chargers
I have another in my pulling truck- p-pumped 6.7 for the last 9 years
That last part is impressive. Any build info? What are you controlling it with?
__________________
1995 Cummins with almost no matching paint, 2 dents

2001 VW TDI South bend, tune, nozzys, custom stuff that's rusting, one custom thing that's not rusting
 
Old 12-31-2017, 06:57 AM   #18
pushlar84
 
pushlar84's Avatar

Name: pushlar84
Title: pushlar84
Status: Not Here
Join Date: Dec 2009
Location: new york
Member`s Gallery
Posts: 658
Quote:
Originally Posted by DDually View Post
That last part is impressive. Any build info? What are you controlling it with?
Hate to hijack a thread
But yes a Allison from a Lbz, complete billet internals, stall is as high as Phil can get it. Northeast’s latest 13mm with 6x .024’s. I was running Destroked old setup with only 4th gear commanded, then coming out and locking converter. Had a lot of people tell me that it wasn’t possible. Had some issues late this season with the trans controller. We found out that I was exceeding the rpm limits and the thing was defaulting and shifting. If I want a knowledgeable guy talk to Jason at transmission tuner. We figured out my issue and gonna go at it strong in first parts of season
Here’s a link to a pull this year

DOUBLE DOWN DIESEL. 397 - YouTube
__________________
2001 Ram- fuel by Northeast Diesel, 2.6 ED, Allison 1000. Haisley cam, engine & trans built in house
 
Closed Thread

Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -5. The time now is 09:13 AM.

 


Powered by vBulletin
Copyright ©2000 - 2024, Jelsoft Enterprises Ltd.
Copyright ©2006 - 2024, CompetitionDiesel.com
all information found on this site is property of www.competitiondiesel.com