The max's (lb7, lly, lbz, lmm) are all pretty much the same since 01. Granted some changes (injectors, turbos, hp, tq. etc) but not really diff. then the 7.3 transformation - to be called a generation. Next real change is slated for '09 or '10 when it's bumbed to a 6.9. Wasn't flaming the 6.0 - not the later model years anyways :-)

I've heard both ways comparing 6.4 vs 6.0 - same or diff. Good points on both sides.

 

So GM is actually on at least its third motor like every one else.

scottman70,
I also question the power reduction until the break in period. I had 500 miles on mine. Hooked up to 19Klbs and started pulling hills. By the time I got to 1000 miles ( which is the recommended amount to put on before towing) I had already pulled up and over several major moutains with no issue at all. Had plenty of power to keep the truck at the leagal limit.

But to get this topic back on track.
Putting the religious wars aside.

Towing 10K lbs up a small hill is for have tons.

These are 1 ton diesel powered duallies we are talking about. Hook 18K lbs up to them and take on some 8% grades for 200 miles. Both up and down the grades. Then take them off the pavement and do the same. This will definitely bring out the men from the boys.

This would be the real test.

Personally I could care less about being the first to the top of the hill. The posted speed limit is the same. I would want to make sure I can keep my heavy load safely behind me as I come down the hill and not smoke the breaks.

 

Yeah...this coming from a '08 F450 with the reduced 6.4L PSD anyway (from the F250 and F350). Which is proof that these current diesels have MORE than enough power to do the job...and the numbers are just to suck weak minded people over to buy that MOST hp/torque they can find...IMO.


biz

 

Yes they are all 6.6 liters, but come-on: "pretty much the same"?! There were substantial changes as you well know over those motor generations, and frankly the LBZ is the one to start considering -- with it's strengthened bottom end, vastly increased cooling, injection system, and not to mention 6 speed Ally with the cool select-a-gear. And when we're talking overheaters, let's not forget the LLYs and their non-reviewed before production inadequate cooling system...

I just would have to try a dodge before I would go back to a chevy after my dmax experience (and that's the whole truck, not just the OH LLY I had)....

 

That's like looking back at the 7.3 PSD and saying there was 5 of them. Nobody rememebrs that nor will they remember the duramax 'L**' version. Just that it was the 6.6 Duramax. this is talking strictly motors now not tranny. Personnaly I don't really care either way - I'm just thinking 5-10 years from now.

 

[QUOTE=DMAX-HD]That's like looking back at the 7.3 PSD and saying there was 5 of them. Nobody rememebrs that nor will they remember the duramax 'L**' version.

Well lets look at what we due remember. The amazing history of GM's diesels- First the amazing gas conversion 5.7 diesel in the late 70"s what a joke, endless problems. Second the 6.2 diesel early 80's not bad but try again, had head problems. Third the 6.5 diesel in the Mid to late 90's which could not compete with anybody, again had head problems. Fourth the 6.6 duramax. After 3 flops they finaly had somthing, I think ford's portfolio starting with the 6.9 ID,7.3 ID,7.3 PSD,6.0 PSD and the 6.4 PSD is far more impressive than GM's four times its a charm.

Chevy- three problem models of the four after 29 years providing diesels in the market
Ford- one problem model of the 5 after 23 years providing diesels in the market

I dont know the exact years but believe this is close.

 

Why don't we stop arguing about Chevy/Ford and start talking about how well the V10 did in the shootout!!!

 

[QUOTE=SANDDEMON08]You left out the one engine that everyone wishes was in their truck - Cummins.

 

[QUOTE=flashman1]If were wishing, i'd take a C7 Cat over a 6.7 ***-a-part any day

 

In reality, i think the duracrap and the ***-a-part are comparable to the 6.4 PSD there just not better.

 

DREAMING maybe Detroit Silver 92 or cat 3406 awe but way too heavy

 

[QUOTE=SANDDEMON08]Hey man if you want there to be all kinds of versions of the dmax thats fine I for 1 am prolly gonna forget'em all in a few yews and just remember I had 6.6 Duramax. Kinda like I forgot the specifics of my 7.3. I agree Ford does have a better history w/ diesel motors - which I was happy to part of. At the time I had 7.3 GM was only offering the 6.5 which was a joke (Although you talk with guys that still got'em and they seem happy). I personally think the 6.0 will NOT be looked back on like the 7.3 (which really had kinda legendary status and 93% market share). I think it'll be looked at as the motor thrown out 'to keep up' with GM. And not that GM didn't have it's problems but I think it was more the perception that Ford let down a lot folks in they way they handled the whole deal. Where-as GM added an axtra 100k warranty to some model years for injector issues the perception was Ford tried to 'sweep' the problems under the rug.

6.4 has potential for sure the - seems like a strong motor.

Ironically GM's history w/ diesel motors was due to the fact they couldn't make a decent 1 in-house. What' did Ford say they were gonna do for their next motor? Drop International and yes make it in-house.

SD
Your pretty sensitive about the whole thing so if you want your truck to be better then I'm good with that - it can be. I never said it wasn't.

 

Something I found interesting is how the 450 with 4.88's pulling 20,000# ran the quarter mile in 53.89 verses the the others towing 10,000# ran it in 60 seconds. I know my 450 with 4.30's pulls my 16,665# stong too. just wondering if that 6.4 they used with 3.73's was not up to its full potential. The 450 with 4.88's is rated 25 less hp and 50# less torque.

 

yeh but the 450 also has a 30% gear reduciton over the others! 30hp and 50 ftlbs is only about a 7% reduction in power so you actually are getting about a 22% advatange with those low gears!

 

I envy you guys driving the fords. I have a new dodge with the new 6.7 cummins. 32 ft float with 22 bales i can squeeze about 47 mph at about 8mpg. im not the only one with that problem out of this motor either. im stuck with this expensive heap too. i get better out of an old 97 f250 psd my wife drives. 250,000 miles. itll usually go about 63 or so with 19 on it. i wanna cry. take my advice, i dont know about the 6.4 psd but the new cummins is not so great. 6.0 psd is alot better as buddies pass me loaded down and make fun.