I have serious doubts about the 6.8 block taking anywhere close to 26 lbs...and these cars and trucks that are making 1000HP and revving to 10,000 RPM have most likely been balanced and blueprinted and are running racing blocks.

That said IMO the only fair comparison for the two powerplants can be using the money saved from the PSD option and putting it into the V10, i.e. Whipple Charger.

Now the diesel gets to add intake, exhaust and tuner approx $1800

Now the gasser can add intake exhaust and headers aprrox $1800

If the gasser adds nitrous, the diesel gets to add methanol/water injection as long as the prices are comparable.

I would love to see that drag race. Then tow 10,000lbs across the US and then compare the fuel/repair bills.

 

well I will say this. I have had diesel and gas, and I will tell you this the 6.0 is a strong pulling engine, but the new v-10 is a pulling machine. now put it this way if you take the v-10 put the exact same turbo system that the 6.0 liter has the diesel would not have a chance, now the diesel modified would do better on fuel but the gas motor would out power it. the gasser would rev faster do to its ignigtion system is computer controlled , diesel engine ignigtion is not cmputer controlled the sequenece is but not totaly contrlled like the gas motor.

 

The 6.0PSD is a completely computer controlled engine. The V-10 would never take the boost level that a 6.0l turbo system achieves, and if it did it wouldn't be on pump gas. Nice thing about diesel no pre-ignition it does not fire until told to fire.

Also the turbo on a diesel is stock a turbo on a V-10 is not. I would say the most boost you will put into a V-10 is around 10-12psi, on pump gas.

Parts for parts the diesel is going to make more.

I'll put my truck up against any V-10 2 or 3 valve that just has a chip and a exhaust system on it.

When you talk about a gas engine reving faster and higher yes it does but, it doesn't make the torque (ever wonder why so many V-10's come with 4.30's stock). When a diesel is making the torque down low or it is chipped making 800-900 ft-lbs it allows higher gears (i.e. 3.73's) stilll launches hard and has great cruising rpm.

Gears do nothing for horsepower all they are is a torque multiplier.

Diesel can run nitrous also even as small of a shot as 50 will give more than 50 horsepower, because not only does it add oxygen, it acts as a catalyst that will aid in burning almost 100% of the fuel, and it cools the intake charge quite a bit, which reduces EGT. Add nitrous to a gasser and the temps go up and so does pre-ignition.

 

I am sure most of you have seen this but just to refresh your memory...
http://timber.arxys.net/albums/2-27-04/F350Run.wmv

 

That is a cool vid, too bad the truck has a 12 valve Cummins in it.

 

And you know this how?

 

Despite the fact that there are morons out there putting Cummins in Fords the fact remains...the potential of a Diesel is huge!

 

I couldn't see the video, but I think I have seen it before.
What time does he run? High 10's???
I know the engine out of my car, if fitted in a 4x4 F250 would be well and truely capable of high 10's (It is still frying the tires at the end of the 1/8 mile).

We needn't forget top fuelers either, they don't run on diesel for a reason. And it has more to do with its inability to run at higher rpm than the rule book.

Yes, but in purely racing terms, power is what wins the race.
I am not going to argue that a tuned diesel would be easier to live with that a tuned V10 (however, with your new found power, I feel 3.73's could be used), but the debate - I believe - stemmed from which is quicker?.
So while the diesel may be making 800-900ft-lbs (or even more). The turbocharged V10 would be over 1000hp, vs about 500hp out of the Diesel.

I know which vehicle I would have my money on.
Nope, the V10 wouldn't be able to take 26psi - probably around 15psi at most.
However even with 15psi, this should be around 1000hp (using the rather simple mathematics that is has 25% greater capacity than my 5.4, and would be running 15% greater boost).
I don't think it would need to be running at 10000rpm - 6000 should be fine - that was merely an example of what can be done with a gasser, without nitrous, or any other fuel/cooling agent.

Remember guys, I am a diesel driver, but having tuned quite a few gassers, I think it would be rather fruitless trying to race a properly tuned V10 with a diesel.

 

I got a weak stomach too from listening to some of you guys' egos!!

I think the point has already been made and most of us knew it anyway. For sheer pulling/towing power the diesel is always going to be ahead of gas engines.

But for downright acceleration and drag-racing the gasser is a no-brainer. If you have the capability to apply unlimited resources to a V10 and a 6.0L the V10 wins out hands down. I know next to nothing about engine tech but I've read and listened from enough knowledgable sources to know that's true.

On the other hand if you have $1000 to beef up a truck engine, any diesel is going to win out. But don't forget, you already put an extra $4500 plus extra financing into the diesel when you bought it.

I'm not one of the 6.8L guys who runs around claiming the stock V10 outperforms the stock diesel. In certain circumstances it can, but for towing and hauling weight (like trucks are meant for) the diesel is the winner-especially for very heavy trailers.

On the other hand there's not as big a difference in towing capability between these two engines as some people like to make it seem. Especially for light and medium weight trailers, say under 8000lbs.

Where I live in northern WV, 87 ocatne is $2.09. Diesel is $2.39.

BTW 04 LARIAT STROKER--there's no rule that says you can't come on over to the V10 forum yourself and make your point. There's some dogs over there who know alot more about engine modification than I do (which ain't much).

 

Where is this claimed 1000 HP # for a blown V10 coming from?

The 4.6L Mustang Cobra has a built bottom end that can handle 15-20 lbs of boost for short periods, the V10 does not.

I am not sure if I read your post correctly, but a displacement of 6.8 over 5.4 requires more cfm (larger blower) for larger motors to achieve the higher psi (boost).

I also think you would be hard pressed to find an intercooled supercharger for the V10 with a custom tune, injectors with an adequate exhaust system for $5,400.(cost of diesel option and a tuner only).

I think a giant shot of nitrous would be the most cost effective and reliable way to for the V10 to spank the diesel.

 

PSD 60L Fx4-

You've got 55 posts what your take?

 

I also think you would be hard pressed to find an intercooled supercharger for the V10 with a custom tune, injectors with an adequate exhaust system for $5,400.(cost of diesel option and a tuner only).

Don't forget the cost of the V10 option which is $600. So that puts us back to $4800 difference. It's tough to get much go power out of the V10 for that amount!

 

That was merely a estimation, given the experience from my car.
You are right. However this can be fixed. A good engine rebuilding shop should be able to make a V10 capable of taking 15psi reliably everyday. I believe a V10 should be able to take 15psi on a very intermitant basis in its stock form.
Yes it would require a greater airflow than a turbo/supercharger for a 5.4l, however what is saying that this can't be done?
I tend to agree. I think it would be possible if you know the right people - say you knew someone had a slightly used Garrett GT42/51R sitting around ... But that isn't everybody.
The diesel in general would be cheaper to modify, but ultimately the V10 should provide greater results, it would cost more, require more research, but it could be done.
Could be, but that wouldn't be street legal now would it?

 

theres no reason the 6.0 couldnt turn the r's that a v10 could. the big time tractor pullers have no problems spinning 700+ cubic inch I6's over 7000. a good set of rods, pistons, a bottom end brace and balance job, and the 6.0 could go 6500 without any trouble.

BTW, the one and only time a diesel was allowed into an indy race it took the pole and swept the field by LAPS!!!

the only reason the diesel hasnt set records on the 1/4mi is because its just not possible to get 4 turbos spooled up on the line.

 

BigF350 you are also comparing a 4 valve twin cam 5.4 motor to a 3 valve V-10. That sounds like the same motor that the GT uses.

If V-10's can make the power and run the quarter wonder why you never see them at the drag strips? Every wed and fri around here there is diesels at the track.

BTW my 6.0 will run all day long and 30psi continuosly I dare somebody to run a V-10 at 15psi that hard.