May seem obvious but...

[matt-jenkins]

So I have a friend who seems to think that duramax's use a converted gas block. I have told him time and time again that he is wrong.
So the question is, am i missing something here or is he wrong?

Thanks for the help.

 

[Goofyexponent]

I have heard similar rumors about the older 6.2 and 6.5 diesels, but I think the 6.6 Duramax is based on it's own design. It's actually built (or was) by Izuzu and GM in Moraine, Ohio.

I don't think that the Duramax is a bored out gasser block because of it's dual overhead cam design. It is a 32 valve engine, and AFAIK the older chevy engines (the gassers anyways) didn't run a DOHC setup. Even the 6.0 and 8.1 blocks were pushrod engines.

I would say that the Duramax is it's own animal...but maybe someone with a little more expirence will chip in.

 

[Fordsandguns]

I'm with Goofy on this one.
All I've ever read states that they were designed by Isuzu and GM together specifically for the diesel pickup market.

 

[grog85]

Duramax diesels were a fresh design buildup, no gas engine parts in this one. It was a partnership between GM and Isuzu. Your friend could probably understand that it wouldn't stand up to 1000 hp, 1800 ft. lbs., @over 80 psi boost if it were based on gasser parts.

 

[blumax]

the d-max is a DOHC? i know its a 32 valve motor but are you sure its a DOHC? i looked at mine and it kinda don't look like one. Hmmmmm....

 

[Goofyexponent]

Actually, I think it is a pushrod engine..The new 4.5 L concept engine is a DOHC engine nand that's whre I got screwed up. The 6.6 IS a 32 valve engine though to help her breathe.

 

[EMD Diesel Power]

The Duramax is a diesel design right from the get-go. Isuzu/GM partnership. The 6.2/6.5 are also diesel designs Detroit Diesel/GM partnership. The 5.7 diesel was the gas-conversion job.

 

[TLBREWER]

To add on to what EMD said. The Isuzu/GM partnership is a separate entity apptly called DMAX. Go figure. Few know that Isuzu has actually produced or put more diesel engines on the road than anyone else.

And yes it is a single cam/pushrod 32 valve engine.

Tom

 

[mojoman]

The Duramax is a diesel design right from the get-go. Isuzu/GM partnership. The 6.2/6.5 are also diesel designs Detroit Diesel/GM partnership. The 5.7 diesel was the gas-conversion job.

yep...was the Olds 350 block they converted...had one of them...was just plain old trouble


mojo