i was wondering how reliable is 600 horse power in these trucks? with all the supporting factors studs, turbo, bypass the whole 9 yards? thanks

 

I hope VERY!!!

 

Id say it would be reliable with all the "supporting mods". Also as long as you dont abuse it and rip on the truck everywaking second even though these things can take a beating. As long as you keep an eye on things and upgrade the entire fuel, tranny, engine equally and at the correct time it should be reliable. People have tow rigs with alot more than 600hp so i wouldnt worry a whole lot. Yet im just a young kid havent owned a truck that had 600hp so thats just my .02

Jordan

 

I usually drive my truck around town at 550-ish, I don't have problems. You don't want to drive around wide open, (everything set on kill, I mean), I'll tell you that!

 

Totally unreliable, period.

An ISB is on a short trip to the bone yard at a constant 600 HP.

 

Depends on how it is setup and how you drive it. Will it have the longevity of a stock engine. Not even close. Something is going to break at that level eventually. So, if you go to that level, expect to have a problem in which you will have to pay for a rebuild or three as some people have done.

 

yeah im at about 450 or so right now and its like when is enough gonna be enough? i cant afford to just work on the the thing all the time i think it might just be time to say its enough

 

Wonderfull thing about the third gens is the ability to have a high hp monster but have the ability to simply detune and run it as a DD. I think 600 is a perfect goal for a dd, and you can still have great reliability. Build it right and drive it smart.

 

reliablity depends on you as well as your supporting mods, longevity of the engine will be different. just like any engine higher hp= lower life. just thought id throw that out there.

 

All you will accomplish is a melted engine and an empty wallet trying to DD 600 HP. In order to make 600 hp DD you will break every traffic law written and then the truck will be impounded and you will be wearing stripes.

Its like trying to street drive a race built gas engine, it just doesn't work out well at all.

 

You know, I drive my truck anywhere between lvl 5 and 7 daily, and have been doing so for the past 3 or so years. I don't rag my truck, I use some control with my right foot, but it's there if I get on it.

I think that the biggest factor is what is between your ears and how you use your foot. If you try to DD and tow with my setup at 550-600, you'll window the block, with some pistons that look like velveta. If you drive like a sane person and treat the truck right, warm ups, cool downs, good maintenance, and watch the gauges, you'll be fine. It's gotta be built for it.

 

You are pretty funny. Read my sig I had a 750 hp truck that with a little time on a dyno would have easily done 800 and I drove it everyday for over 2 years . I would have put it up against any stock truck for reliability concerns. I had one I know it can be done, oh and I had a cat and the truck was legal. I'm not here to argue just saying it can be done but the driver has a ton to do with it.

 

Point your missing here is you are NOT making 600 HP driving it around on the street, same way a 600 HP gas engine isn't being utilized on cruise night.

What it does on the track or dyno is not what it does on the street OR your a target for every LEO in the immediate vicinity.

What ever you do to make 600 HP on the dyno you CANNOT do driving down main street of any town. Really, locked up in OD or 6th gear, full load on the engine, and 3500 rpm's on the street? I guarantee that didn't happen everyday for 2 years.

DD you MIGHT use 300 hp on the rare occasion, more likely the most it sees is 150-200 hp frequently and less than 100 hp constant. Far cry from the big numbers that are being thrown around.

The OP asked a very specific and clear question "how reliable is a CR at 600 HP", the answer is also very clear, totally unreliable. An ISB will not function reliably at or above 450 HP even on an 80% duty cycle. They cooling system, oiling system, oil cooling, cylinder heat soak, is not DESIGNED for those levels of power. Don't take my word for it, find an engineer with Cummins design expertise and ask. When he quits laughing he will explain WHY its funny, maybe.

Better yet, ask certain individuals how long their +600 HP motor lasted, about 14 seconds or one 1/4 mile pass at that power level.

That said, one can drive a CR around all day using only the power needed and still make 600 HP on the dyno or race track, and, it will work for a while. However, EVERY TIME it goes to the dyno or track reliability and life expectancy is severely reduced. Since reliability is really a measure of average life defined by use, guess where it goes? Sorry, but thats the REAL truth.

 

Again my truck had over 500hp the way I daily drove it. I will admit I ran the TNT-R on 3 or 5 most days and left my TST off simply because I wanted it to last and I didnt need the extra power. I changed oil and filters more often and drove sensibly. It can easily be done with the these trucks in the hands of an intelligent driver and well built truck. Where the line in the sand is as to what level you acctually start to lessen the life of the truck I think has more to do with driver, the way it was built, and what it was built for more than the HP level. Anyway I think we can agree these trucks are great stock, they are great modified. Just beware if you are going to modify you need to have cash at hand in the event something goes wrong, and the same goes for a stock truck if it is out of warranty.

 

@ no 6 oh no - You knew the kind of question he was asking and you went off on a tangent. Yes you are correct. If you put an CR 5.9 on a water brake and had it running at 600 hp all day long it wouldn't last long.

Now everybody else who answered the question that was asked, or the way the question was intended, is also correct. A truck that will put down 600 hp on the dyno can be a very reliable vehicle if built right and driven in a sensible manner.