600 got beaten up pretty bad

[DF5152]

Originally posted by DGFoster

Well I drove it today and what ever they did @ the dealer did the trick,lot more power and sounds different also,I am impressed with the power compared to what it was before.

Find out what they did????

 

[DGFoster]

Originally posted by DF5152

Find out what they did????

I took my truck in today to have some clearance lights put on,and I talked to the tech about Mikes truck,he did a ECM and PCM reflash and he ordered him a new turbo,he said it wasnt perfoming like it should and STAR said to order new turbo,but I drove it and I could hear the turbo real well,but this tech seems to know his stuff. He is up north and I will hear from him when he comes home tuesday and see how it towed coming home.

 

[MVaden]

Probably a dumb question, but what does LLY stand for?

 

[Bertram65]

It is the engine code for the higher rated 2004 Duramax, the previous version was the LB7.

 

[DPKetchum]

As far as heat and alum. heads the BANKS guys I talked with said the Duramax's at times are seeing 1700DEGREES for short bursts with no failures YET!:--)

 

[Yo Hoot]

Dmaxes handle heat quite well. The heads do a good job of drawing it off.

 

[Jeremiah]

Sheer speculation

Can't compare trucks, cars, airplanes or anything else unless you have all the information. Everything else is speculation.



Both fivers were the same brand, but were they both loaded? We don't know. We don't know rear-end ratios, how well the engines were running, etc. We can say one truck outpulled the other, but that doesn't provide us with enough information to come to any conclusions as to why it happened. We need more informaton.

 

[DGFoster]

Re: Sheer speculation

Originally posted by Jeremiah

Can't compare trucks, cars, airplanes or anything else unless you have all the information. Everything else is speculation.



Both fivers were the same brand, but were they both loaded? We don't know. We don't know rear-end ratios, how well the engines were running, etc. We can say one truck outpulled the other, but that doesn't provide us with enough information to come to any conclusions as to why it happened. We need more informaton.

I agree,but I am not sure what he had in his rig,I can tell you the one we pulled was loaded up pretty good.

Also the Dodge was not running like it should be,it has had the ECM and PCM reflashed according to the tech,so I will no more tomorrow when they come home.

 

[Jeremiah]

Re: Re: Sheer speculation

Originally posted by DGFoster

I agree,but I am not sure what he had in his rig,I can tell you the one we pulled was loaded up pretty good.

Also the Dodge was not running like it should be,it has had the ECM and PCM reflashed according to the tech,so I will no more tomorrow when they come home.

Good luck with it! Always hate to see a Cummins smoked by a Duro or PowerStroke. But it's gotta happen as these engines keep nudging up in power.



Scott Benz at Cummins Rocky Mountain even admits the Duro will eventually be the stronger truck because of the Allison trannie. He says no engine can be stronger than the transmission behind it and I think we all agree the Allison is the better trannie.

 

[mattymac]

All these trannys in stock form can only take about 70-80 stock and thats about the max, anything after that its upgrade time. I read posts on the allison burning clutch packs at an upgraded 80 hp or so. The torqueshift will hardly shift at anything over 80-90 hp. I believe the 48RE is about 70 or so and its upgrade time as well and in upgraded form it will hold the power just like the allison.

 

[Jeremiah]

Strongest trannie?

Originally posted by mattymac

All these trannys in stock form can only take about 70-80 stock and thats about the max, anything after that its upgrade time. I read posts on the allison burning clutch packs at an upgraded 80 hp or so. The torqueshift will hardly shift at anything over 80-90 hp. I believe the 48RE is about 70 or so and its upgrade time as well and in upgraded form it will hold the power just like the allison.

Could be, just quoting someone whose business it is to know these things. Scott is a Cummins man all the way and even has a Cummins-power dragster that's bumpin' 8 seconds in the quarter.



One thing he knows is engines, transmissions and what makes 'em work together, and if he says Allison has the potential to be the strongest stock trannie on the market, that's good enough for me.



For what it's worth, this conclusion came from a diesel workshop where someone posed the question: Where will the horsepower and torque race end? Who will end up with the strongest engine?



Scott said Chevy because it has the strongest transmission. But I imagine that is subject to change if Dodge finds a way to build a better trannie.

 

[DPelletier]

The strongest transmission in a pickup truck isn't the 1000 series allison behind the duramax, its the NV-5600 behind the Cummins!



Dave

 

[sschu600]

The strongest transmission in a pickup truck isn't the 1000 series allison behind the duramax, its the NV-5600 behind the Cummins!

I've driven both and your absolutely right!





As for the most potential in an "engine", have you ever looked under the hood of a semi. Never seen a Pete with a V-8. :-laf

 

[Jeremiah]

Ain't arguing, just reportin'

Originally posted by DPelletier

The strongest transmission in a pickup truck isn't the 1000 series allison behind the duramax, its the NV-5600 behind the Cummins!



Dave

I ain't arguin', Kemo Sabe, just reportin' what somebody said who is in a position to know. I have a 6-speed, so I ain't qualified to comment on an automatic. But I also know automatics rule the roost on drag strips. If you're drivin' a stick shift you need at least 100 extra HP and maybe more to have a chance against an automatic.

 

[DPelletier]

Jeremiah,

I was just pulling your chain as well as reminding people that you can argue that the competition has a better auto, but not a better transmission. I would also agree that for drag racing, auto's are better, but I personally could care less. Bought my truck to tow and the 6 spd is the best choice there is for my use.

Back to the auto's, I think Dodge is still lagging behind because of 4 spds vs. 5 and because of no exhaust brake compatibility, but I'm not convinced that the Allison is such a great and wonderful thing. According to member RBayls who works for DC in the transmission plant, they did an independant survey that found the Allison to suffer the most failures per thousand in the big three diesel trucks (do a search). Allison has a great reputation, but I think the 1000 series is a K-Mart version of a real Allison transmission.

This is all academic to me, as I love my NV-5600 and have no plans to buy an auto ever again.



Cheers,

Dave

 

[Jeremiah]

Originally posted by DPelletier

Jeremiah,

I was just pulling your chain as well as reminding people that you can argue that the competition has a better auto, but not a better transmission... ... ... ... ... ... .....



This is all academic to me, as I love my NV-5600 and have no plans to buy an auto ever again.



Cheers,

Dave

Me, myself and I! I love my 6-speed everywhere except off the line, but that's not enough to make me give it up. It's perfect for towing and even solo I can wait until 3rd, 4th and 5th to catch up with the skrotes who got ahead of me. Now, if I just had a 7th gear for the Interstate ...



Yeah, I know, buy a GV over and under. Sorry, I'd have to drive the truck a million miles to recover the purchase cost. Like you, I'll keep what I have!

 

[GWoody]

MMMMMMM, GV overdrive??????? wonder how these will work with the ecm & all.

 

[DPKetchum]

I had a 6. 0 Ford,2wd,auto srw smoke me from a dead stop and only one brief instance did I ever gain ground and then he kinda ran off and left me. 4 truck lengths from stop light to stop light. I was like DARN. :--) I use the six speed,dually,4wd as a big excuse. LOL

 

[Jeremiah]

GV over/under

Originally posted by GWoody

MMMMMMM, GV overdrive??????? wonder how these will work with the ecm & all.

If I understand correctly, it shouldn't have any effect. Essentially, the drive shaft is shortened to allow room for the GV unit which works like a second transmission. It adds another gear on either side of whatever gear the transmission is using. So instead of a 6-speed, you got a 12-speed, although I doubt that anyone uses it like that. Or you could downshift on a hill or use it to get around a slower moving vehicle. Mainly, it's used to drop the rpms at cruise to what you would have if you had a 2. 54 rear end ratio.





There's a web site somewhere showing the rpm decrease. Also, one of the TDR owners has a lot of information, but I forget who it was. Maybe go to the archives and see what you can find.

 

[DGFoster]

well he got home today,he said he was able to keep up better with the DMAX,but it still falles off on the hills,but he has to take it in for a new turbo,the dealer had to order it so maybe that will take care of it.