• Welcome to The Truck Stop! We see you haven't REGISTERED yet.

    Your truck knowledge is missing!
    • Registration is FREE , all we need is your birthday and email. (We don't share ANY data with ANYONE)
    • We have tons of knowledge here for your diesel truck!
    • Post your own topics and reply to existing threads to help others out!
    • NO ADS! The site is fully functional and ad free!
    CLICK HERE TO REGISTER!

    Problems registering? Click here to contact us!

    Already registered, but need a PASSWORD RESET? CLICK HERE TO RESET YOUR PASSWORD!

Has anyone read the new Diesel Power article?

Dan I have no I idea why you would come into a thread and start calling Bill Heath a despicable liar. Thats really rude of you. And he is such a nice guy.
 
GM Guy said:
PS: Dan Hunter, I would like to apologize if I have offended you.
Click to expand...

Thanks but really, I'll be fine tomorrow regardless of whether I'm censored here or upset...whatever.

My problem is that someone that is unfamiliar with Heath and people like Steaksauce that log on here to search somewhere down the road might get an inappropriate perception of Heath diesel.

Yeah, I'm angry but I'm fine with folk here if for no other reason that if anyone badmouths someone that's saved me car payments, I can counter their opinion. Buddy and I will probably be fine with each other down the road but for now, I can't embrace the cavalier attacks.
 
Yeah things escalated quickly. It would be cool if Bill posted on the forum though. I'm actually surprised I haven't seen him on here. He would definitely contribute to the forum.
 
Theres only one person that has attacked anyone in this thread and it is not me. Thats fine, its an internet forum, not a Sunday brunch with the bible study. Theres no argument here. Someone just blew up over nothing.
 
Matt Bachand said:
I don't think anyone calling him a liar, I just think people are curious to how he came up with 500HP. Dyno or math?
Click to expand...

Matt Bachand said:
So DP said 500 HP or Bill? I do see how the doubts come to be, most have trouble reaching 1/2 of that :) Good Idea Chris.

GM GUY, give him a call and add the info into the post.
Click to expand...

Aren't his engines stock though? Did he tweak his IP? Does anyone know? DS2 or DS4 isn't capable of supporting 500HP stock, or we'd all have blown up blocks.

Or does that include drugs?
 
I believe the DS4 is capable of more fuel especially at higher rpms. He might have 500 hp at say 5k rpm but probably doesn't have much of a torque increase. HP = how fast the work is done.
 
You can do a mathematical extrapolation from speed, rpm, stock weight, gear ratio, etc... there are several calculators that let you theoretically calc. HP in the absence of a dyno...

As far as I know, Bill hasn't had the LSR on a dyno. I don't believe for a second that he would make false claims - and I don't think that's what GMguy was hinting, either... but DieselPower Mag is another story.

I believe it's called 'journalistic license'...

IMHO, you could probably get a properly built-up 6.5 to achieve ~500 HP with 2 synchronized IPs, nitrous/propane, and a lot of prayer... but it wouldn't win any longevity awards.
 
And I can take a estimate of HP from the 1/4 mile track when I have a 400hp engine with 4.10 gears that gets me down that lane real fast, but in a speed race I top out at 120mph. Then I can take that exact same 400hp engine and car and put 2.73 gears in it, and now my quarter times are much slower, but I have the same horsepower, but all of a sudden I can now hit 150mph. Oh, and I shaved off some weight, lost some accesories, and lowered it for better aerodynamics too.

So those estimates are gross estimates, and not something that will probably ever show on a dyno.

I do think you could achieve 500hp with the correct DS4 mods/programming and the right airflow modifications. Like getting the right cam profile ;) with higher lift and less negative overlap, and heads and exhaust honed or headers. I think we will get there, but then we'd be hitting 200mph.
 
Last edited:
Last I talked to Bill ,he said the race truck has 600 hp, 30 some pounds of boost,and 22.5 -1 compression ,I believe him.
 
6.2 turbo said:
Last I talked to Bill ,he said the race truck has 600 hp, 30 some pounds of boost,and 22.5 -1 compression ,I believe him.
Click to expand...

No reason not to believe.....Great guy, honest and has no reson to lie....It's not like his claims will make the truck go faster.....All his speed/runs are posted at Bonneville, for all to see.
 
I still think most of his gains are from higher rpm. Bison stated in his ds4 rebuild thread that the supply part of the ip built more pressure as rpm increased and it seemed to be sustantially more
 
I have always assumed charge pressure increases with RPM, just by seeing how the fuel is mapped and what I knew of the pulse widths. And with the pulse width mapping GM must have spent a lot of time mapping what pulse width equated to what fuel rate at that specific assumed charge pressure given the RPM. Its not a smooth curve. Although lucky for you, you arent stuck with any of GM's mapping, just their design boundries, unless all the tables are remapped in the code.

I have suspicions that GM knew exactly how much their boundries could achieve, because they gave you the ability for the pedal to request up to 96mm3 (an otherwise seemingly irrelevant scanner data point, since you really just need to know TPS%), but they cut the fuel table at 80mm3. However when you max out the pulse width with IP charge pressures at 4800rpm, then you are likely getting at least 96mm3 for what the computer has defined as 80mm3.

It definately takes a nonstandard tune to achieve 5000rpm, because all I have seen cut fuel off at 3900rpm, like GM did. In order to achieve higher than 4000rpm the programmer would have to modify the fuel table and the pulse width table, because both go to 0 at 4200rpm.

6.2turbo has achieved some serious boost and power from his 6.2 by regularting his IP charge pressures higher. Although we know it didnt last too long before blowing heads at those boost levels.
 
I was told by someone that by double rpms , you will have double horsepower and double the amount of fuel, so if you have 300hp at 3000 rpm you will have 600hp at 6000 rpm this is providing you actually can double the fuel at this rpm in real life.
 
You must log in or register to reply here.
Back
Top