Peterbilt 379X

[HeavyHauler]

Any other Peterbilt enthusiasts in here?



Just wondered if anyone else had any info on the forthcoming 379X. It's an awesome looking truck, but I haven't been able to get much info on it. However, I have heard that it's gonna have a $200,000 price tag and is supposed to be powered by an 800 CAT. Anybody hear the same or different? There's not much on the net about it, I've just heard this stuff from other truckers.



I think it's supposed to be out within a few months, just wonder how many they'll sell with that monster price tag.



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[Ray Torresdal]

torque #'s

I don't know what the torque #'s might be on a CAT rated at 800 hp. , but assume they are off the chart. What do you put behind it for transmission that will stand up?? If this is real, it has to be an owner/operator only truck, and I wouldn't think an owner/operator would want the weight penalty that would come with 800 hp. , and the heavy duty components needed to harness that much snort.



On the other hand, how bad do I need the extra 50 hp. my pickup puts on the ground???

 

[RustyJC]

Hmmm..... I thought the fleets were complaining of short drive tire life once BHP went over 450-500.



Rusty

 

[TxDieselKid]

I saw one at the truck show in Dallas a few weeks ago. Sweet dang rig.

 

[EMD Diesel Power]

Can pretty much guarantee that it will have an 18-speed transmission. When the Signature 600s were available, that was the only transmission option with that engine.



Im really surprised that they have 800HP..... and who's going to pay the wieght penalty for that HP. Payload is $$$$$$$$$$ in trucking.



Gives darn good bragging rights though... I'd buy one. And while Im dreaming... throw in a W900L too.





Jeff

 

[Peter Campbell]

I think on the cummins site they mentioned electronics that detune the engine based on the gear. With 800 HP and the gear reduction normally you would need a very tough axle set( power transmission not weight carrying). With the electronic control you can run lighter axle sets and match the engine power with the axle capability. So the only time the full power is used is at later gears. I am sure CAT developed something similar. That saves some on the transmission and trans/motor mounts/frame stiffness requirements also. . Less driveshaft torque and resultant counter torque. Still probably only justifiable to those who want one-no justification needed. (you can not be taxed on a cost of doing business that makes your life happier). And those who get overweight permits for special hauling.

For the owner operator that can pay the note down on one- they would be the envy of a lot of drivers. But weight is a big deal. I think ALCOA rims pay for themselves with the weight savings on freight rates alone over the life of the truck- not confirmed. And that is not much of a weight difference. Even controlled and optimized design it will add a significant amount of weight.

 

[HeavyHauler]

Re: torque #'s

Originally posted by Ray Torresdal

If this is real, it has to be an owner/operator only truck, and I wouldn't think an owner/operator would want the weight penalty that would come with 800 hp. , and the heavy duty components needed to harness that much snort.

Yes, this is an owner/operator truck. I don't know of any fleet that can afford a $200,000 price tag for one truck.



That's why I said I wondered how many they would sell, don't know of many guys out there that love Peterbilt that much.



I don't think that weight is a factor on this truck either, it's obviously not a truck that's gonna make anybody money.

 

[RollOver_Pete]

I didn't know Cat had a 800 hp. truck engine. Guess technology moves pretty darned fast these days. I once had a 79 long nose Pete 3ax powered by a V-8 Cat (3408DI) with a retarder and a 6X4 spicer. 550 @ the drivers made that truck ran like Viper. They sure don't make them like they used to...

Remember, there ain't no feelin' like Petermobelin'

 

[HeavyHauler]

Originally posted by RollOver_Pete

I didn't know Cat had a 800 hp. truck engine. Guess technology moves pretty darned fast these days.

Peterbilt doesn't have a 800 for production trucks. It was supposed to be a special edition motor built especially for the 379X. If Pete put 800s in thier trucks, everyone is right, no one would buy them because of the added weight. Not to mention the fact that an 800 would be serious overkill. Like I said above, I'm not sure that's what this thing will have, just heard it by some other trucking buddies.

 

[truckstom]

I try to keep up with this stuff, since I drive 'em. Nobody I know of is making 800 hp anything... Cat dropped the 600hp for 2004, 'cause it wouldn't pass EPA regs. Unless it's changed 525hp is about it for Cat with the new acert technology engines... Cummins also dropped their 600 for the same reason,

18 speeds were it for those high (2050) torque engines, till they finally made the RTLO13. The "super" 13 is like the 18, split every gear.





ps, Cat does make a 800hp V-8 for off-road use only in it's dozers. .







disclaimer: I'm no expert, but I play one at the local truck stop, on the CB radio. whoop-whoop

 

[TxDieselKid]

Not only has 800 been done, but there are some over 1,000hp engines out there.



This has been a while since, but, ALBAN.



Andrew

 

[Will24]

I still don't really understand the near non-existant use of the ISX in Class 8 trucks. The engine weighs only 2100 lbs WET at 565hp whereas the 3406E 575hp weighs 2900lbs DRY. That's a big difference, plus Cummins parts are about half the price of cat parts (damn heui system... )

 

[C. Harlan]

Andrew and I were both at the truck show, and contrary to popular rumors, it comes standard with a 550 Kitty Cat, and has a 600 as an option. Nowhere is there an option for an 800 cat, nor do they make one yet, at least not stock. However it does come with twins, as I noticed, and liked every bit of that aspect.



Also, the Eaton Fuller RTLO 20*13, "R" being for ROADRANGER, the "T" being TWIN COUNTERSHAFT, "L" being LOW INERTIA and the "O" being OVERDRIVE, the star being for the series of transmission it is, is not a split every gear transmission. . you still have the same 3 rail design, rather, the low gears would be, First is down and left. Second is top middle, third bottom middle. This is where the super kicks in in the Super 13. 4th, is down and to the right, and 5th is top right. . split to high range, low gear split, go back to top middle. this is 6th, split to high gear in same slot, and make 7th. . move down you have 8 and 9... go to bottom right slot, and there is 10 and 11... . Now for the super part, you have the "big hole" up on the dash. I do not know if it is the countershafts, or something else in the transmission, but in my old 379, I would almost have to be going 85-90 to hit 12th gear. . this is what the Super 13 is, as opposed to the regular 13. The regular 13 is where the big hole is down and to the right. Hope this enlightens some of y'all.



-Chris-

 

[Got Smoke?]

Originally posted by charlan



Also, the Eaton Fuller RTLO 20*13, "R" being for ROADRANGER, the "T" being TWIN COUNTERSHAFT, "L" being LOW INERTIA and the "O" being OVERDRIVE, the star being for the series of transmission it is, is not a split every gear transmission. . you still have the same 3 rail design, rather, the low gears would be, First is down and left. Second is top middle, third bottom middle. This is where the super kicks in in the Super 13. 4th, is down and to the right, and 5th is top right. . split to high range, low gear split, go back to top middle. this is 6th, split to high gear in same slot, and make 7th. . move down you have 8 and 9... go to bottom right slot, and there is 10 and 11... . Now for the super part, you have the "big hole" up on the dash. I do not know if it is the countershafts, or something else in the transmission, but in my old 379, I would almost have to be going 85-90 to hit 12th gear. . this is what the Super 13 is, as opposed to the regular 13. The regular 13 is where the big hole is down and to the right. Hope this enlightens some of y'all.



-Chris-

Chris I'm seeing stars after reading all of that! :-laf

 

[TxDieselKid]

Originally posted by Got Smoke?



Chris I'm seeing stars after reading all of that! :-laf

You should listen to him try to explain it! :-laf

 

[reddog359]

Originally posted by RollOver_Pete

I once had a 79 long nose Pete 3ax powered by a V-8 Cat (3408DI) with a retarder and a 6X4 spicer. 550 @ the drivers made that truck ran like Viper. They sure don't make them like they used to...

Remember, there ain't no feelin' like Petermobelin' [/

QUOTE]





ahh the good ole days of the [ never be late V-8, 1693 TA, and the KTAs] ain't nothing like two sticks and big mechanical horsepower. I got the two sticks but I am lacking in the horsepower department until I can convince my wife that I need $2800. 00 for a turbo and a set of injectors from diesel injection of Pittsburg, if I can talk her into that it should put me at about 600 hp to the ground. ya gotta love it



Jeff

 

[FFutch]

Originally posted by Dl5treez

My dad has a '67 Diamond Reo with a twin-turbo Silver 92(~550hp or so estimated) with a 6x4--I swear the freakin' thing sounds like the Book of Revelation itself coming down the road...



I haven't heard it run in around 3 1/2 years--living 1/2 way across the country cuts down on my home time--but I still remember that *sound*

The 550 horsemen of the apocolypse,eh ... Doug

 

[rteig]

I have seen and heard a little about this truck. I had not heard about the price or tha big Cat. What a kick in the @$$ that would be to drive. I drive part part time helping my brother in laws brother in law he has an older 379EXHD with the 550 Cat and an 18 spd running 7 axles under a bull rack and a newer 379 (2001 or 2002?)EXHD Ultracab with a 525 Cummins and an 18 speed running 7 axles and they are a hoot to drive. Need a little more speed just squash the happy pedal a little harder. He also a 99 Freightliner with a 500 Cummins turned up just a little and I have the tickets to prove how hard that thing will run!

 

[TPyle]

It will be offered with the Cat ACERT C15 up to 550hp/1850pt. Next year we will have the C18 600hp/2050-2250pt. As far as the axles go DS404s standard issue. This combo would require DS405P or higher. The RTLO20913A is a twin countershaft 9 speed that splits all the top gears. In fact Eaton offers the RTOC1609A covertible to a 13spd. Weight is not nor has ever been the issue with the 600hp engines either from Cat or Cummins. It has been the price of the upgraded components and the tire abuse. These engines were never intended for line haul operation. They were intended for heavy haulers were weight is as much an issue. The price is really not an issue if you consider that with a 600/2050/18spd setup you get roughly the same startability and gradability numbers as with a lower hp/pt engine with multiple boxes, 5/4 or 6/4. The last 6/4 combo I sold (2001) the 4spd aux had a net/net price of about $8000. 00

 

[truckstom]

Originally posted by TxDieselKid

Not only has 800 been done, but there are some over 1,000hp engines out there.



This has been a while since, but, ALBAN.



Andrew

From the factory Andrew... What Bruce does, doesn't count. Does it?? oh hell you know what I mean