Someone commented on chevy rusting out. You must never have owned anything newer than 1990 or you wrecked it and had it repaired poorly because with washing my '99 suburban '86 astro only when it rains, they have never rusted out even at 155k and 195k on each. Except where the astro rear door was repaired and then it rusted. I like GM"s galvanized metal. I am sure now all makes are galvanized properly to prevent rusting. How else can they guarantee 100k rust through warranty.

Steve Lubecki

 

Wussie.....

You obviously are not into or educated on perfromance diesels. In performance diesel talk you list HP, not torque usually because simply you can figure torque will be right at double the HP which is usually the case with the 5.9 Cummins. Regardless, we are in the Commercial trucking business and have 15 trucks. No one goes by torque alone. When guys talk about power levels they just mention HP. Like when you buy a new Pete?....they list it having a 550 Cat in it. Everyone goes by what HP the computer is set at. Example....look through a truck magazine where trucks are for sale. All will list 400HP Cummins, 550 Cat, 365 Detroit, etc...

Anyway, you are applying your commercial truck experience to what I said. The little diesel on pickups and OTR are on completely different levels. I could see how 1000HP would seem impossible out of a little motor....you are thinking in the OTR box. Every power level (your 650HP Detroit) that is used in an OTR will be reliable power that shouldn't have EGT problems. Think OUTSIDE the box and you will find fire breathing, black smoke blowing twin turbo'd 12v 5.9 Cummins motors that are being fed with Nitrous, propane, methanol, and roughly 4 times the amount of fuel that your 650HP Detroit uses at WOT. You will find them pulling 10 second quarters in 7K 4x4 Dodges and in front of a big fat sled. They make lots of power but can't make it for more than one pull or the EGT's go nuts. They aren't even streetable.
Go educate yourself at what the Cummins guys are making with their 12v P7100 motors. 750HP and 1500ft lbs is old news these days. All it takes is an O-ringed head, twin turbos, big injectors, the pump turned WAY up, methanol injection,and a few other small misculaneous things.
Piers diesel is now building custom cams, pumps, heads, etc. and are making about 1000HP out of these engines. Now, it is definantly not reliable. You only have so many HP/hours in an engine. The 12.7L Detroit series 60's (We have 7 of them on our Freighliners) is not being pushed very hard. Now, make that motor push 800-1000HP and it will start effecting it's longevity. 600HP is not hard on that engine one bit and doesn't effect it's longevity. Same thing with the 5.9L. Stock 250HP/500ft lbs does not stress the engine one bit. THey live nearly as long turned up at 350HP/700ft lbs.

Anyway, go learn about what guys are doing in the Performance diesel world before you call BS on me.
Dragging around a loaded truck isn't that hard. I've pulled one of our trucks loaded at 79,400lbs a couple of miles and even got up to 30mph. All you have to do is be geared right.

 

RJF, Numbers you are talking about are unrealistic for the applications that would apply to towing a toy hauler loaded with atvs. I would think( I could be wrong) anyone reading these posts, is doing so, to gain knowledge for that type of application. Not OTR hauling. Even though I have seen a couple OTR trucks hauling trailers on the beach at Pismo[img]i/expressions/face-icon-small-shocked.gif[/img]

 

I'm not the one that brought OTR trucks up. The other fella applied his knowledge of working on OTR engines towards performance diesel applications. I was purely just letting him know he is wrong by calling BS on my part. [img]i/expressions/face-icon-small-happy.gif[/img]

Of course the modified 5.9L Cummins that you would find under the hood of a serious puller or dragger would not be streetable, like I said before.

As far as pulling a toy hauler with a modded Cummins Dodge....that differs greatly. Electronic diesels can be modded with black boxes that have levels of increased power. This is what most people use, more aggressive, higher powered settings while not in tow and empty and less aggressive settings while pulling loads around. But, it all depends on what the truck can handle. A Cummins equipped with twins can handle a lot of aggressive fueling with weight behind it, some very larger aftermarket turbos can too. This is a whole different topic though.....

 

I must of read right through that in his thread then.

I know about the black boxes etc. Problem is, you can put all the power you want to it. All that power will find the weakest link and that usually is the trans or rear end.

 

Yes, in stock condition. You have to relize that a certain amount of work will have to be done to the rest of the truck if anyone actually wants to use the power that is available from some of these larger black boxes. For the Dodge it take about $5K. That would a be a built 47RE auto from ATS, DTT, Suncoast, and there are other companies out there. Their custom Dodge trannies are capable of holding 800HP and 1600ft lbs. They have no problem at all with 15K behind the truck, the CUmmins making about 400+HP, and running in overdrive. The driveline and D70/80 rear end are fine, they are not a problem even with a LOT of power.

 

seriously RJF think about what you are saying now.... what normal person is actuall going to do that to their truck 1 in a thousand

 

hes just tryin to make a point of capability

 

Yes, I was just mentioning what they are capable of.

It is not nearly 1 in 1000 that have modded trucks. I take it you aren't into late model diesel trucks. A lot of people that tow heavy trailers go with chips/boxes and eventually install a built up auto. It only makes sence, especially with the DOdges since they have the most trouble with big power and stock autos. The odds aren't as steep as you think. It only costs about $3K-10K to make higher power than stock and making it reliable and usefully. That cost is nothing to most guys that buy new trucks and plan on pulling heavy trailers with them. Whats 3K in upgrades when you just walked off the lot at $40K for the truck?

 

I like Dakotas and think of a bran new 06 Dakota Quad TRX_4 OFF RAOD 4.7 H.O
4.7 H.O = 270 hp 310 T