Ok so I know Isuzu makes the Dmax but who owns or makes the other two?

thanks in advance.
cmc

Well IIRC Cummings makes their own motor and the PSD is a joint deal with Ford and someone else... Not sure though, someone will chime in with the info...

Ok so I know Isuzu makes the Dmax but who owns or makes the other two?

thanks in advance.
cmc
Cummins Inc. www.cummins.com (http://www.cummins.com)

and

Navistar (aka International) Inc. www.navistar.com (http://www.navistar.com)

in that order...

Navistar... That's it.. Thanks Goldsburg, I knew it had "star" in it..LOL

Ok so I know Isuzu makes the Dmax but who owns or makes the other two?

thanks in advance.
cmcIsuzu doesnt make the duramax, its a Isuzu design and made buy GM.

Has anyone else ever heard of a CumminGs? -Jeff:lol:

once or twice.

Isuzu doesnt make the duramax, its a Isuzu design and made buy GM. gm owns isuzu. they build the motors in the u.s. for gm. the electronics on the valve cover says isuzu.

Has anyone else ever heard of a CumminGs? -Jeff:lol:
============
This is one of my pet peeves.....not all that important, really.

I have an uncle who says "Cummings", and also pronounces "sandwich" as "sangwich".http://www.dieselplace.com/forum/images/smilies/laugh_explode.gifhttp://www.dieselplace.com/forum/images/smilies/laugh_explode.gif

What the Chevy salesman told me was that because of GM's disaster with the modified gas block diesel engine, years ago, GM offered Isuzu a deal they couldn't refuse. GM agreed to pay the entire cost of building the plant which builds the Duramax engines, and give Isuzu 60% ownership of it.

GM lost a lot of diesel customers to Dodge and Ford and knew they had one final chance to become a major player in the diesel engine truck market. That was how desperate they were when making such a deal with Isuzu.

Isuzu doesnt make the duramax, its a Isuzu design and made buy GM.

Ford is International

What the Chevy salesman told me was that -------.
You may be right, but I have learned through my experience that the vast majority of car salesman, as well as people who work in auto parts stores, really don't know whats going on, and they bullsh$t most of the time.

People can call it a joint venture, but my valve cover says ISUZU, not chevy or DMAX Inc.

scott ...your are right.....duramax has nothing that was made in the usa..it's design and buit in japan...it was assembled in the usa only!!!!!

You guys really need to find out the facts first. Isuzu design yes, some parts from different parts of the world yes, ALL major parts made here and final assembly here.

My salesman is a brother in Christ. I believe what he told me.

You may be right, but I have learned through my experience that the vast majority of car salesman, as well as people who work in auto parts stores, really don't know whats going on, and they are dishonest most of the time.

:funnypost Just because someone is a "brother in christ" doesnt mean they know everything. Personally I would trust someone that works for GM, not for a dealership the sells GM products.

July 18, 2000
Isuzu Motors Limited

Production Started at Diesel Engine Joint Venture by Isuzu and GM


DMAX, Ltd., a joint venture company of diesel engine manufacturing and sales established by Isuzu Motors Ltd.(Isuzu) and General Motors Corporation(GM), has started its production on July 17. The engine is to be installed in the new full-size pickup truck series of GM

DMAX was founded in September 1998 under the share equity of Isuzu and GM, 60% and 40% respectively. The company was established in Moraine, Ohio, to manufacture the most advanced diesel engine. Total capital investments exceed $300 million. DMAX will manufacture the 6.6 liter V8 direct injection diesel which was newly developed by Isuzu. The production is scheduled to reach the level of 200,000 units per year in 2004.

In 1997, Isuzu and GM agreed to leverage the management resources including research and development, to strengthen the global competitivity of GM group. Currently, Isuzu is actively working together with GM in the fields of diesel engine and commercial vehicle business as Center of Expertise. Various projects are in process worldwide under the strategic partnership of GM and Isuzu.

Following the start of operation at Isuzu Motors Polska in Poland, The project of DMAX is significant for the companies. This is an excellent combination and harmony of Isuzu's diesel engine technology and GM's high-quality production workforce.

The new V8 diesel named as DURAMAX 6600 is to be loaded on Chevrolet Silverado and GMC Sierra 2001 models. With the launching of this new product, GM aims to improve the competitiveness in its category and to reinforce the brand image.

At the Pikes Peak Hill Climb Race held on July 4th in Colorado, The GMC Sierra with the Duramax 6600 prototype achieved the best time record in its history in the diesel vehicle category, which is a good start for DMAX, GM and Isuzu.

DMAX, Isuzu's fifth overseas diesel engine plant, following Thailand, Indonesia, China and Poland, is an important addition to the company's overseas engine supply network and it completes Isuzu's global diesel engine supply network that encompass Asia, Europe, North America and Japan.

Company Outline(Plan)
<TABLE cellSpacing=0 cellPadding=3 border=0><TBODY><TR><TD vAlign=top>Company Name</TD><TD vAlign=top>:</TD><TD vAlign=top>DMAX, Ltd.</TD></TR><TR><TD vAlign=top>Establishment</TD><TD vAlign=top>:</TD><TD vAlign=top>September 9, 1998</TD></TR><TR><TD vAlign=top>Address</TD><TD vAlign=top>:</TD><TD vAlign=top>Dryden Road, Moraine, Ohio, USA</TD></TR><TR><TD vAlign=top>Capital</TD><TD vAlign=top>:</TD><TD vAlign=top>USD 100 million</TD></TR><TR><TD vAlign=top>Shareholders</TD><TD vAlign=top>:</TD><TD vAlign=top>Isuzu Motors America, Inc. (60%)
General Motors Corporation (40%)</TD></TR><TR><TD vAlign=top>Representative</TD><TD vAlign=top>:</TD><TD vAlign=top>Jun Motoki, President &CEO</TD></TR><TR><TD vAlign=top>Business</TD><TD vAlign=top>:</TD><TD vAlign=top>Manufacture and Sales of Diesel Engine</TD></TR><TR><TD vAlign=top>Product</TD><TD vAlign=top>:</TD><TD vAlign=top>V8 6.6 liter direct-injection diesel</TD></TR><TR><TD vAlign=top>Capacity</TD><TD vAlign=top>:</TD><TD vAlign=top>2000 - 100,000 units
2004 - 200,000 units</TD></TR><TR><TD vAlign=top>Production Plan</TD><TD vAlign=top>:</TD><TD vAlign=top>2000 - 17,000 units
2001 - 100,000 units</TD></TR><TR><TD vAlign=top>Plant Site</TD><TD vAlign=top>:</TD><TD vAlign=top>700,000 sq. feet</TD></TR><TR><TD vAlign=top>Employees</TD><TD vAlign=top>:</TD><TD vAlign=top>700</TD></TR></TBODY></TABLE>

:funnypost Just because someone is a "brother in christ" doesnt mean they know everything. Personally I would trust someone that works for GM, not for a dealership the sells GM products.
"DMAX was founded in September 1998 under the share equity of Isuzu and GM, 60% and 40% respectively."

Just because someone is a sells trucks for a living doesn't mean they don't know what they are talking about.

July 18, 2000

Isuzu Motors Limited




Production Started at Diesel Engine Joint Venture by Isuzu and GM


DMAX, Ltd., a joint venture company of diesel engine manufacturing and sales established by Isuzu Motors Ltd.(Isuzu) and General Motors Corporation(GM), has started its production on July 17. The engine is to be installed in the new full-size pickup truck series of GM

DMAX was founded in September 1998 under the share equity of Isuzu and GM, 60% and 40% respectively. The company was established in Moraine, Ohio, to manufacture the most advanced diesel engine. Total capital investments exceed $300 million. DMAX will manufacture the 6.6 liter V8 direct injection diesel which was newly developed by Isuzu. The production is scheduled to reach the level of 200,000 units per year in 2004.

In 1997, Isuzu and GM agreed to leverage the management resources including research and development, to strengthen the global competitivity of GM group. Currently, Isuzu is actively working together with GM in the fields of diesel engine and commercial vehicle business as Center of Expertise. Various projects are in process worldwide under the strategic partnership of GM and Isuzu.

Following the start of operation at Isuzu Motors Polska in Poland, The project of DMAX is significant for the companies. This is an excellent combination and harmony of Isuzu's diesel engine technology and GM's high-quality production workforce.

The new V8 diesel named as DURAMAX 6600 is to be loaded on Chevrolet Silverado and GMC Sierra 2001 models. With the launching of this new product, GM aims to improve the competitiveness in its category and to reinforce the brand image.

At the Pikes Peak Hill Climb Race held on July 4th in Colorado, The GMC Sierra with the Duramax 6600 prototype achieved the best time record in its history in the diesel vehicle category, which is a good start for DMAX, GM and Isuzu.

DMAX, Isuzu's fifth overseas diesel engine plant, following Thailand, Indonesia, China and Poland, is an important addition to the company's overseas engine supply network and it completes Isuzu's global diesel engine supply network that encompass Asia, Europe, North America and Japan.

Company Outline(Plan)
<TABLE cellSpacing=0 cellPadding=3 border=0><TBODY><TR><TD vAlign=top>Company Name</TD><TD vAlign=top>:</TD><TD vAlign=top>DMAX, Ltd.</TD></TR><TR><TD vAlign=top>Establishment</TD><TD vAlign=top>:</TD><TD vAlign=top>September 9, 1998</TD></TR><TR><TD vAlign=top>Address</TD><TD vAlign=top>:</TD><TD vAlign=top>Dryden Road, Moraine, Ohio, USA</TD></TR><TR><TD vAlign=top>Capital</TD><TD vAlign=top>:</TD><TD vAlign=top>USD 100 million</TD></TR><TR><TD vAlign=top>Shareholders</TD><TD vAlign=top>:</TD><TD vAlign=top>Isuzu Motors America, Inc. (60%)

General Motors Corporation (40%)
</TD></TR><TR><TD vAlign=top>Representative</TD><TD vAlign=top>:</TD><TD vAlign=top>Jun Motoki, President &CEO</TD></TR><TR><TD vAlign=top>Business</TD><TD vAlign=top>:</TD><TD vAlign=top>Manufacture and Sales of Diesel Engine</TD></TR><TR><TD vAlign=top>Product</TD><TD vAlign=top>:</TD><TD vAlign=top>V8 6.6 liter direct-injection diesel</TD></TR><TR><TD vAlign=top>Capacity</TD><TD vAlign=top>:</TD><TD vAlign=top>2000 - 100,000 units

2004 - 200,000 units
</TD></TR><TR><TD vAlign=top>Production Plan</TD><TD vAlign=top>:</TD><TD vAlign=top>2000 - 17,000 units

2001 - 100,000 units
</TD></TR><TR><TD vAlign=top>Plant Site</TD><TD vAlign=top>:</TD><TD vAlign=top>700,000 sq. feet</TD></TR><TR><TD vAlign=top>Employees</TD><TD vAlign=top>:</TD><TD vAlign=top>700</TD></TR></TBODY></TABLE>
This I believe. But I will never take a salesmans word on anything without seeing it in writing or knowing it previously. I know for a fact that alot of car salesman jump from brand to brand, and not because they know more about the brand they are moving to. I once had a Chevy truck salesman ask me what kind of truck I had, when I told him it was a Duramax he asked me if it was a diesel. -Jeff

Didn't GM buy back that 60% though recently? I thought that I read about that somewhere.

Isuzu doesnt make the duramax, its a Isuzu design and made buy GM.):h That's what all you GM guys say!):h How do you spell Duramax in Japanese??

Probably not to different than the way you spell Chrysler in German!

:funnypost

Guys over on the Mercedes forum really wouldn't like that comment-it would remind them the Daimler name is forever linked with Chrysler.

The 6.6 isn't the only Dmax. It has a big brother.

GM has been working with Isuzu since the 1970's. Remember the Chevy LUV?

Is it bad that GM uses the Isuzu motor? Dunno, but Isuzu has a VERY good reputation in the diesel industry.

Yeah, the Isuzu diesel engine in the Luv is one of my dream diesel motors. Our neighbor had one with over 350,000 miles that was on its third body, second frame, and at least 2 trannies and the thing just kept puttering on. Change the oil and fuel filter and that was about all you had to do to it. Dang tough little engine.

"DMAX was founded in September 1998 under the share equity of Isuzu and GM, 60% and 40% respectively."

Just because someone is a sells trucks for a living doesn't mean they don't know what they are talking about.GM agreed to pay the entire cost of building the plant which builds the Duramax engines, and give Isuzu 60% ownership of it.

The article does not say GM foot the bill for the whole thing.

However...

He was right about the 60% part and the older engines being a disaster.

I also heard the same thing reinke said

"Didn't GM buy back that 60% though recently? I thought that I read about that somewhere."
<!-- / message --><!-- sig -->

GM agreed to pay the entire cost of building the plant which builds the Duramax engines, and give Isuzu 60% ownership of it.

The article does not say GM foot the bill for the whole thing.

However...

He was right about the 60% part and the older engines being a disaster.

I also heard the same thing reinke said

"Didn't GM buy back that 60% though recently? I thought that I read about that somewhere."
<!-- / message --><!-- sig -->
<TABLE cellSpacing=0 cellPadding=3 width="100%" border=0><TBODY><TR vAlign=top><TD bgColor=#e9e9e9>1971</TD><TD>GM signed a capital agreement with Isuzu.</TD></TR><TR vAlign=top><TD bgColor=#e9e9e9>1972</TD><TD>KB pickup trucks first shipped to the U.S.A. under the Chevrolet LUV name.</TD></TR><TR vAlign=top><TD bgColor=#e9e9e9>1974</TD><TD>Gemini, the first car jointly developed with GM under the world-car concept, was introduced in the Japanese market.</TD></TR><TR vAlign=top><TD bgColor=#e9e9e9>1983</TD><TD>GM and Isuzu established GM Egypt jointly with local investors.</TD></TR><TR vAlign=top><TD bgColor=#e9e9e9>1984</TD><TD>Shipment of Gemini R-Car (Chevrolet Spectrum) commenced.</TD></TR><TR vAlign=top><TD bgColor=#e9e9e9>1987</TD><TD>IBC Vehicles Ltd. was set up to manufacture commercial vehicles in the U.K. as a joint venture between GM and Isuzu.</TD></TR><TR vAlign=top><TD bgColor=#e9e9e9>1989</TD><TD>GM and Isuzu jointly established Isuzu-General Motors Australia Ltd. to import, assemble and market Isuzu vehicles in Australia.</TD></TR><TR vAlign=top><TD bgColor=#e9e9e9>1994</TD><TD>Production of NPR gasoline powered trucks started at the GM Janesville Plant in Wisconsin.</TD></TR><TR vAlign=top><TD bgColor=#e9e9e9>1995</TD><TD>Production of Hombre pickups jointly developed with GM for U.S. market started at the GM Shreveport Plant in Louisiana.</TD></TR><TR vAlign=top><TD bgColor=#e9e9e9>1996</TD><TD>Production of medium-duty trucks with Isuzu cabs started at the GM Janesville Plant.</TD></TR><TR vAlign=top><TD bgColor=#e9e9e9>1997</TD><TD>Isuzu Motors Polska Sp. z o.o. was established in Poland to assemble diesel engines for Adam Opel AG in Germany.
Isuzu Thailand started the OEM supply of Isuzu TFR pickups to GM Thailand.</TD></TR><TR vAlign=top><TD bgColor=#e9e9e9>1998</TD><TD>In the U.S.A., DMAX, Ltd. was set up jointly by Isuzu and GM to manufacture diesel engines.</TD></TR><TR vAlign=top><TD bgColor=#e9e9e9>1999</TD><TD>GM raised its share of equity in Isuzu to 49.0% from 37.5%.</TD></TR><TR vAlign=top><TD bgColor=#e9e9e9>2000</TD><TD>Production of 6.6-liter direct-injection diesel started at DMAX, Ltd.
GM and Isuzu jointly established General Motors Isuzu Commercial Truck, LLC for sales and marketing of GM/Isuzu commercial vehicles in the U.S.A.</TD></TR><TR vAlign=top><TD bgColor=#e9e9e9>2001</TD><TD>GM and Isuzu agreed to start consigned-basis production of Isuzu one-ton pickups at GM Thailand.</TD></TR><TR vAlign=top><TD bgColor=#e9e9e9>2002</TD><TD>All-new Isuzu one-ton pickups, jointly developed by GM and Isuzu, debuted in Thai market as "Isuzu D-Max."</TD></TR><TR vAlign=top><TD bgColor=#e9e9e9>2003</TD><TD>GM's share of Isuzu's capital was altered from 49% to 12%.
Isuzu and GM established a new joint venture company called GMI Diesel Engineering Ltd. (GMIDEL) for powertrain systems.
Production of 1-ton pickup truck for general export started at GM Thailand.

August 14 (http://encyclopedia.lockergnome.com/s/b/August_14), 2002 (http://encyclopedia.lockergnome.com/s/b/2002) - General Motors sells its 49% share in Isuzu but quickly turns around to buy 12% back. GM also takes full control of DMAX (http://encyclopedia.lockergnome.com/s/b/DMAX) and Isuzu Motors Polska (http://encyclopedia.lockergnome.com/s/b/Isuzu_Motors_Polska), with Isuzu losing not just the factories but also ownership of all engine designs.

DMAX of Moraine, Ohio (http://encyclopedia.lockergnome.com/s/b/Moraine%2C_Ohio) is a manufacturer of Diesel (http://encyclopedia.lockergnome.com/s/b/Diesel) engines for trucks (http://encyclopedia.lockergnome.com/s/b/Truck). Originally a joint venture (http://encyclopedia.lockergnome.com/s/b/Joint_venture) between General Motors (http://encyclopedia.lockergnome.com/s/b/General_Motors) and Isuzu (http://encyclopedia.lockergnome.com/s/b/Isuzu), the formation of DMAX was announced in December of 1998 (http://encyclopedia.lockergnome.com/s/b/1998). General Motors acquired full control of the venture in 2003 (http://encyclopedia.lockergnome.com/s/b/2003), including all engine designs. The company's Duramax V8 (http://encyclopedia.lockergnome.com/s/b/GM_Duramax_engine) has been extremely successful for GM.

Prior to the founding of the DMAX venture, the Moraine plant produced GM's 6.5 L Diesel V8. Production of that engine began in 1982 (http://encyclopedia.lockergnome.com/s/b/1982).

</TD></TR></TBODY></TABLE>

Prior to the founding of the DMAX venture, the Moraine plant produced GM's 6.5 L Diesel V8. Production of that engine began in 1982 (http://encyclopedia.lockergnome.com/s/b/1982).


:exactly:

I've driven passed the plant many times. It's been there a long time, along with the assembly of the dmax it also is home to the final assembly of most of the gm line of SUVs.

I want to throw in another angle to this. This is 2nd hand info. I was told by an aquaintance who knows an engineer that works at the Duramax plant, that the cast iron Duramax 6.6 block is the same block as the 6.5 GM diesel. That the block was the only thing GM. All other parts are Izuzu designed.

A tech that has worked on both, especially if he ever had the engines out where he see them real good could probably verify this.

Tom

My salesman is a brother in Christ. I believe what he told me.
Yeah, and so were all those priests that A$$ Raped innocent children for years! That's a real trustworthy bunch.

I trust a brother in christabout as much as the Chevy salesman that told me the d-max was rated at 300hp, but actually put out 600-:t

Yeah, and so were all those priests that A$$ Raped innocent children for years! That's a real trustworthy bunch.

I trust a brother in christabout as much as the Chevy salesman that told me the d-max was rated at 300hp, but actually put out 600-:t
Just a tad vicious eh?

Would have been easier to say Bull$hit...

Yeah , but that's just not my style man!

Yeah , but that's just not my style man!
I LIKE YOUR STYLE!!!:ro)

The original question was a good one. It has been answered.
Do you just like to see your name in print; maybe just "Jack" up your post. It's been ansered, let it lay.:rant:

Idahofox

who are you referring to?

Jeff

Reviewing all of the post to this thread, YOU would be my first choice.

For what it is worth: I thing it is SO cool that you have a memorial for your dad. Where-that he was able to share your "Pride and Joy" is very special.

Idahofox

BTW, nice way to "fix" your post.
What did I do to you to make you so "upset"? I was simply agreeing with a fellow member. If you dont want to read my posts you are more than welcome to unsubscribe yourself from this thread. I also do not see anything in the rules that says you can not respond to a members posts, no matter how many times you feel like doing so. Apparently I am a post whore and just want to see my name in print. Sorry for upsetting you, let it "lay"......? Honestly, dont you have something better to do?

Jeff,

I do not believe that my previous post's need to be "Fixed", my refextion was in respect to your "Dad" and not to you alone.

Idahofox

At this point I am confused as to what the whole point of your previous posts were. I think I understand, but I have never heard of the word "refextion" if you meant reflection, which i think you do because of the placement of the "X" in relation to the placement of the "C" on the keyboard.
So if you really do mean reflection, then I sincerely thank you for your post about it. As for the other posts I am still confused, are you upset with me, and did I do anything to upset you? Thanks -Jeff

Jeff,

You got me on the "Keyboard" thing, I ment what else I said.

Idahofox

ok, umm, thanks. I think. other than that, I am going back to my 20 page paper that is due in 2 weeks, that I havent started.

Due dates are good! Paper's have a way of being there when they are due.

I smell an A+.

Idahofox

gee a guy thinks he's asking a simple question that will get one, maybe two replies... come back and OMG... 5 pages!!!

uh thanks guys... My father in law is selling all his cheet to buy a new truck. Well I've been talking up diesels since I've owned mine. He's ridden it towing and liked how it went. He's a dodge nut all the way..... except when money is involved... his brother in law can get him a feerd PSD on discount cuz he sells 'em. I say for god sakes buy the dodge if you're not going to buy the Dmax... I sold him my old 73 1 ton GMC and he went and rebuilt a perfectly good tranny... tranny smoked first time pulling... rebuilt it again... yep smoked 2nd gear. His bud with an older feerd diesel came to the rescue. Didn't even call me. :D Oh well. He asked and I new people here would know the answer. More info than I expected.

Thanks but I think we can call this thread quits now... :)

cmc

Has anyone else ever heard of a CumminGs? -Jeff:lol:AND your point is?
Typing as it is spoken down this a way

lol, just ribbin ya... I used to be a Cummins owner, I guess some of it stuck... -Jeff

96 vette,
Yes Izusu makes the duramax w/ gm input on it. ( electronics design ect........

I wouldn't be caught dead owning an Izuzu diesel. If GM was smart they would be accociated with oh I don't know. Let's just say CAT.

I'm Happy with my choice, as I assume the majority of the people on this site are. To each his own! -Jeff

Why would you not be caught dead driving an isuzu diesel war wagon?

I wouldn't be caught dead owning an Izuzu diesel. If GM was smart they would be accociated with oh I don't know. Let's just say CAT.
That would be nice, but anything that is painted yellow carries a hefty price tag!

Has anyone else ever heard of a CumminGs? -Jeff:lol:
My Wife has! and you know what the G stands for!
;)

I want to throw in another angle to this. This is 2nd hand info. I was told by an aquaintance who knows an engineer that works at the Duramax plant, that the cast iron Duramax 6.6 block is the same block as the 6.5 GM diesel. That the block was the only thing GM. All other parts are Izuzu designed.


Tom
I don't believe that to be at all true. I remember reading that the 6.6L Duramax was 100% new.

Who cares if Isuzu made it. I, for one, am not a die hard, brand loyal, US made only product guy. I buy for quality, and price. As far as the Cummins vs. Duramax (isuzu) debate, the only knock so far on the Duramaxes are the injectors, which are made by Bosch, which is the same Bosch that makes injectors for the Cummins. IIRC the cummins are starting to have sporadic injector issues as well. So basically you are choosing between 2 motors that are durable, powerful, and have superior longevity, that both happen to have sh&*ty injectors. So then from there you look at the whole picture. You can buy a GM and get a long lasting truck with a bulletproof tranny or you can get a Dodge that you can slap big tires on stock and watch it fall apart around you... tranny first.

I wouldn't be caught dead owning an Isuzu diesel. If GM was smart they would be accociated with oh I don't know. Let's just say CAT.I not gonna bash a cat motor but have you priced a rebuild kit for a cat motor compared to the others! Big Truck Motors. They are usually twice as much if not more. I see a lot of guys running the big cam cummins for this reason, easy to get a ton more power and easy and cheaper to rebuild. But hey each to there own if you like big yellow go for it!

I not gonna bash a cat motor but have you priced a rebuild kit for a cat motor compared to the others! Big Truck Motors. They are usually twice as much if not more. I see a lot of guys running the big cam cummins for this reason, easy to get a ton more power and easy and cheaper to rebuild. But hey each to there own if you like big yellow go for it!
Not to mention that the pinch-kittys are h e a v y...

I want to throw in another angle to this. This is 2nd hand info. I was told by an aquaintance who knows an engineer that works at the Duramax plant, that the cast iron Duramax 6.6 block is the same block as the 6.5 GM diesel. That the block was the only thing GM. All other parts are Izuzu designed.

A tech that has worked on both, especially if he ever had the engines out where he see them real good could probably verify this.

Tom
I have to call BS on that one - the Duramax block has the two-stage oil gallery, no weak-azz main bearing webs and induction-hardened cylinder bores. I think it's about as far away from a 6.5 block as you can get!

It is BS. Nothing on the Dmax is GM. Probably a good thing considering their history in diesels. I think the block comes from Germany, finish machined and induction hardened in Ohio. Heads are cast in Japan, machined in Ohio. Crank is forged and roughed out in Japan, finished machined and nitrided in Ohio.

There are a few of us here that were in the Dmax plant a few years back. We got the whole scoop.