who makes the best diesel truck?

[custom8726]

A FSP hauling 30K lbs? I want to see this load... Maybe pulling stuff from the field to the barn, but no way are you pulling 30K+ often and long. There is a guy on the DTR board who pulled something like 46K from Washington to Alaska (his steel building IIRC), but said he never hit over 45MPH.

Its not the problem of moving, its stopping.

And yes, my buddies LMM is giving him injector issues. The first time their diesel tech figured it was because of the computer going haywire, the second time he didn't have a clue why they went...

As far as the shortcomings of the 68RE, I have yet to find one, and if you look on all the boards, you'll be hard pressed to find any issues with them either. Another side note, take a look at the output shaft on a stock 68RE 4x4, then compare it to a 1000 4x4 output shaft, the Allison looks like it came off a Tonka truck. If you want to go farther, look at the connecting rods in the motor, the Cummins are twice the size of the Duramax, and we all know size really does matter.

I am local around here, and the Cummins trucks do dominate around here. BUT, I also hot-shot with my old uncle when he needs a second driver, and I can tell you we see a lot more Dodges and Fords on the east coast than we do GM's, and there is a reason.

One last question... If the Duramax is such a great motor, why is it you don't see them transplanted into Fords or Dodges? Because you sure do see plenty of GM's and Fords driving around with the B series motors, whether its the old 12V, or the newer CR trucks.

And Custom, the Allison can't hold 600HP even with a VB and TC upgrade. Actually I take that back, a 2WD can. The 4x4 will snap output shafts continuously with anything over 500HP in racing or heavy towing applications. Even daily driving will break them at that power if you try boosted launches or if you drive it like you stole it. NONE of the stock tranny's can hold over 450HP reliably with 4wd and a heavy right foot. Of course, any of them could hold 1000HP if you never use it...

Just to clarify I never said the Duramax was a better engine then the older cummins I simply stated what surrounds the cummins is junk, Hence, why people transplant the cummins in different applications. If GM offered the cummins in a 3/4 ton I would buy one, but they don't so I choose the duramax package as I personally feel its a way better ALL AROUND vehicle then the other 2.. As far as breaking out put shafts It's possible but I have not had any issues with my LLY breaking any shafts in the tranny or front end and as stated before its seen plenty of boosted launches and truck pulls. The tranny has been upgraded as well as a tripple disk converter was added but all the Allison hard parts are stock. Heres a couple clips of the LLY.
http://s244.photobucket.com/albums/gg33/custom8726/?action=view&current=D-MAXjpgburn2.flv

http://s244.photobucket.com/albums/gg33/custom8726/?action=view&current=dragstrip41322-1.flv

 

[custom8726]

As far as the shortcomings of the 68RE, I have yet to find one, and if you look on all the boards, you'll be hard pressed to find any issues with them either. Another side note, take a look at the output shaft on a stock 68RE 4x4, then compare it to a 1000 4x4 output shaft, the Allison looks like it came off a Tonka truck. If you want to go farther, look at the connecting rods in the motor, the Cummins are twice the size of the Duramax, and we all know size really does matter.




Did we stop and think that there maybe some metal differences?

Exactly!!!!

 

[motoroilmccall]

Metal differences will do a lot of good, but torque is torque, and size matters. Just like there is no replacement for displacement.

You're entitled to your own opinion, just like I am mine. I pull 20K+ lbs of beans, corn, or meal, with my truck at least 2x a week, and while the odometer has been broken for about 3 years now (yanked the wire off somewhere), it has about 315K miles on it, give or take 10K. Stock trans, and right around 450RWHP, give or take 25HP. The truck doesn't owe me a thing, and none of my Dodges ever have. The only thing that I don't understand is how you guys can bash a transmission that you've either never drove, or never broke. I've personally broken an Allison trans (not a 1000, think it was a 545), I've driven 1000 equipped trucks, 48RE equipped trucks, 68RE equipped trucks, E4OD Trucks, NV4500, NV5600, G56, blah blah blah... And I can't complain about them too much... Now in modified applications, the Allison is good, but so are the 68RE and even the 48RE. A TC and VB will make a 48RE just as strong as an Allison with the same upgrades. Stock for stock you're comparing apples to oranges. The D-Max is a high revving motor that doesn't have the low end grunt of the Cummins (you can't deny that), which is easier on tranny's.

Ford with a Cummins... That's the best diesel truck out there.

 

[newby79]

Metal differences will do a lot of good, but torque is torque, and size matters. Just like there is no replacement for displacement.

You're entitled to your own opinion, just like I am mine. I pull 20K+ lbs of beans, corn, or meal, with my truck at least 2x a week, and while the odometer has been broken for about 3 years now (yanked the wire off somewhere), it has about 315K miles on it, give or take 10K. Stock trans, and right around 450RWHP, give or take 25HP. The truck doesn't owe me a thing, and none of my Dodges ever have. The only thing that I don't understand is how you guys can bash a transmission that you've either never drove, or never broke. I've personally broken an Allison trans (not a 1000, think it was a 545), I've driven 1000 equipped trucks, 48RE equipped trucks, 68RE equipped trucks, E4OD Trucks, NV4500, NV5600, G56, blah blah blah... And I can't complain about them too much... Now in modified applications, the Allison is good, but so are the 68RE and even the 48RE. A TC and VB will make a 48RE just as strong as an Allison with the same upgrades. Stock for stock you're comparing apples to oranges. The D-Max is a high revving motor that doesn't have the low end grunt of the Cummins (you can't deny that), which is easier on tranny's.

Ford with a Cummins... That's the best diesel truck out there.

The duramax revs less than 200 rpms faster than the 6.7. The 6.7 hits peak torque of 650 @ 1500 and the Dmax 660 @ 1600. 6.7 peak HP of 350 is reached @ 3013 and the dmax of 365 @ 3200. Maybe 10 years ago the cummins was not a high reving diesel but I think it is in that class now. Dont get me wrong the cummins is a great engine but it is not the only great engine out there. I think the duramax and the allison tranny set the new standard when Chevy brought out this combo. And you are absolutely correct torque is torque. Now which one has more? I had better get the calculator out for this one.

 

[nilzlofgren]

Need to know what FSP, and LLY stand for. BTW, my non turbo 7.3 pulls about 20K at about 55 MPH, although, 45 is a much more comfortable speed.

 

[04ultra]

Need to know what FSP, and LLY stand for. BTW, my non turbo 7.3 pulls about 20K at about 55 MPH, although, 45 is a much more comfortable speed.

By the way what does BTW stand for??? opcorn: opcorn:




.

 

[nilzlofgren]

By the way what does BTW stand for??? opcorn: opcorn:




.

Not sure.:monkey:

 

[04ultra]

Not sure.:monkey:

:dunno: :dunno:

 

[custom8726]

Need to know what FSP, and LLY stand for. BTW, my non turbo 7.3 pulls about 20K at about 55 MPH, although, 45 is a much more comfortable speed.

LLY stands for the second generation duramax engine code. Lb7, LLY,LBZ, and the latest LMM. Don't know about the others

 

[motoroilmccall]

The duramax revs less than 200 rpms faster than the 6.7. The 6.7 hits peak torque of 650 @ 1500 and the Dmax 660 @ 1600. 6.7 peak HP of 350 is reached @ 3013 and the dmax of 365 @ 3200. Maybe 10 years ago the cummins was not a high reving diesel but I think it is in that class now. Dont get me wrong the cummins is a great engine but it is not the only great engine out there. I think the duramax and the allison tranny set the new standard when Chevy brought out this combo. And you are absolutely correct torque is torque. Now which one has more? I had better get the calculator out for this one.

Apparently all you look for is peaks... Take a look at the Dyno charts, the Cummins spikes Tq lower in the RPM band, peaks, then flat lines. The Duramax ramps up Tq, then peaks, then slightly falls off gradually the rest of the rev band. Its that spike in Tq that kills tranny's.

All diesels are becoming higher revving, nature of technology. But you never answered my question. Why is it a D-Max is never transplanted into a Ford or Dodge, while the Cummins is put in everything from GM's and Fords, to Toyota's, Nissan's, Jeeps, IH Scouts, hell even hot-rods nowadays?

One more thing... I NEVER said the D-Max was a bad motor, in fact, I've given it props the whole time. BUT, it is still a light duty mill, and it will stay that way. That has nothing to do with HP and TQ numbers, it has to do with construction, and the Cummins is a Medium Duty Engine, meaning its considerably stronger than the LD D-Max.

 

[Peacock]

One more thing... I NEVER said the D-Max was a bad motor, in fact, I've given it props the whole time. BUT, it is still a light duty mill, and it will stay that way. That has nothing to do with HP and TQ numbers, it has to do with construction, and the Cummins is a Medium Duty Engine, meaning its considerably stronger than the LD D-Max.

Have you ever driven a B-series powered F-650 or F-750? They are so grossly underpowered it's not funny. So yeah, they may hold up fine in that application, but they certainly are powerful enough for the job. That's a job for a C-series or DT466.

 

[ned coed]

cummins - no question

 

[djmercer1]

last time i checked, cummins, powerstroke etc didnt make trucks. only gm, ford and dorge make diesel ld trucks in amercia. across the pond where izuzu, mazda and toyota make diesels you would probably get a different answer....

back in the day of the d/w trucks i probably would have said that dodge had the edge because of the cummins, but ive never been a fan of the b-series and later trucks. ive never liked the fords and the twin wish bone front end they ran for years, but personally always like the gm.

things id like to see on all hd pickups, at least as options:
solid front axles
manual shifts
ptos
full bench seats up front in crew and extended cabs
120v generators
air compressors
snow plow preps
option for ac, pw etc delete
rubber mat covered floors

dave

 

[eric_271]

Apparently all you look for is peaks... Take a look at the Dyno charts, the Cummins spikes Tq lower in the RPM band, peaks, then flat lines. The Duramax ramps up Tq, then peaks, then slightly falls off gradually the rest of the rev band. Its that spike in Tq that kills tranny's.

All diesels are becoming higher revving, nature of technology. But you never answered my question. Why is it a D-Max is never transplanted into a Ford or Dodge, while the Cummins is put in everything from GM's and Fords, to Toyota's, Nissan's, Jeeps, IH Scouts, hell even hot-rods nowadays?

One more thing... I NEVER said the D-Max was a bad motor, in fact, I've given it props the whole time. BUT, it is still a light duty mill, and it will stay that way. That has nothing to do with HP and TQ numbers, it has to do with construction, and the Cummins is a Medium Duty Engine, meaning its considerably stronger than the LD D-Max.

I tried to tell him the same thing, not to mention the cummins is making the same power with 2 less cylinders but some how in his mind duramax has raised the standard.

 

[custom8726]

I tried to tell him the same thing, not to mention the cummins is making the same power with 2 less cylinders but some how in his mind duramax has raised the standard.:confused:

Yup!! It certainly has.

 

[newby79]

Why is it a D-Max is never transplanted into a Ford or Dodge, while the Cummins is put in everything from GM's and Fords, to Toyota's, Nissan's, Jeeps, IH Scouts, hell even hot-rods nowadays?[/B] QUOTE]


Thats because the chevys with duramax's are still running fine. So they are not in the boneyard and there are plenty of good cummins engines found in junk dodges with bad trannys sitting around in the junkyard so the engines are readily available.
LOL
:spam:

 

[eric_271]

Yup!! It certainly has.

Some day it might be as legendary as the cummins. If you really need a diesel work truck now buy the real deal, a cummins dodge. Its no secret dodge put the hurt on chevy when they came out with the cummins dodge.

 

[eric_271]

Why is it a D-Max is never transplanted into a Ford or Dodge, while the Cummins is put in everything from GM's and Fords, to Toyota's, Nissan's, Jeeps, IH Scouts, hell even hot-rods nowadays?[/B] QUOTE]


Thats because the chevys with duramax's are still running fine. So they are not in the boneyard and there are plenty of good cummins engines found in junk dodges with bad trannys sitting around in the junkyard so the engines are readily available.
LOL
:spam:

Funny, theres no shortage of chevy duramax pickups at our salvages around here. We have formen at work switching back to the cummins dodge from the chevy duramax this year. The company wont let them change anything on the engines and swear the new dodges out pull the duramax's.

 

[Peacock]

Funny, theres no shortage of chevy duramax pickups at our salvages around here. We have formen at work switching back to the cummins dodge from the chevy duramax this year. The company wont let them change anything on the engines and swear the new dodges out pull the duramax's.

The 6.7 will not out pull the LMM.

 

[newby79]

Funny, theres no shortage of chevy duramax pickups at our salvages around here. We have formen at work switching back to the cummins dodge from the chevy duramax this year. The company wont let them change anything on the engines and swear the new dodges out pull the duramax's.

It probably has a lot to do with price as the dodge trucks are cheaper. And there is no way it out pulls the duramax.