Thoughts on this car and rwhp...

[Bdubbs]

So I came across this car on facebook. I didn't want to comment on his for sale post. I personally don't believe it.

2.8 kenne bell, different cams, supporting mods, 19 lbs, 93 octane, kurgan tuned making 715 rwhp. I mean, do cams add that more extra hp?

 

[MineralCobra]

I think it's a little high for pump gas.. that just my opinion

 

[2Rare]

I wouldn't believe it until I see the dyno sheet. What good is it if you claim what your car is pushing without providing the potential buyer (s) the proper documentation (dyno sheet in this case) to back the claim up?

 

[usmcah-1w]

I made 669rwhp with a 2.3 and cams, I am currently getting tuned by 04sleep and hoping to be around 700 with the 2.9. I do think that is a little high though

 

[Bdubbs]

I made 669rwhp with a 2.3 and cams, I am currently getting tuned by 04sleep and hoping to be around 700 with the 2.9. I do think that is a little high though

What fuel?

 

[usmcah-1w]

What fuel?

93 right now


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[R.D.P.]

If legit, I bet they set the limiter to 7500 and just went for it to get a hero run for the dyno sheet.

 

[Bdubbs]

93 right now


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I bet the dyno I use would give me similar results as your pump gas numbers. Shop told me they tuned a 2.3 whipple, 21lbs, 21 timing, headers, e85, and was in the 660's.

One reason why I hate dyno sheets. They vary so much.

 

[01yellercobra]

They might also be claiming it's crank numbers. One "racer" around here was called out on that.

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[Bdubbs]

They might also be claiming it's crank numbers. One "racer" around here was called out on that.

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That's what I was thinking, but it says 715rwhp.

 

[01yellercobra]

That's what I was thinking, but it says 715rwhp.

Missed the "rw". Too much studying.

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[Quick Strike]

Probably 93 and Torco mix.

 

[jblood37]

It's entirely possible bc like you said dynos vary a ton. Could be an uncorrected value as well. Car is about 2 hours from me. I'll tell him to drive it over and do some pulls against my car for comparison lol.

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[tt335ci03cobra]

...

 

[c6zhombre]

I bet the dyno I use would give me similar results as your pump gas numbers. Shop told me they tuned a 2.3 whipple, 21lbs, 21 timing, headers, e85, and was in the 660's.

One reason why I hate dyno sheets. They vary so much.

Is this the dyno you made 470/490 with an unported eaton and made 586 with belt slip on the tvs gas tune? It doesn't sound that far off, you need to go back I bet you make 700 now. Dyno variance shouldn't be much of a factor for you because it's been the same dyno all along

Sometimes it's not the dyno that's the variance....it's the car. It's proven some of these cars came out of the factory with more spot on cam timing than others.

 

[tt335ci03cobra]

...

 

[tt335ci03cobra]

http://www.mustangandfords.com/how-to/engine/mmfp-1212-cam-and-blower-upgrades-power-players/

Eaton mild cam only, not degreed optimally

Kennebell 2.8, 15.8psi, mild cam, stock head, early shut off, etc.

Here's a nice write up and test by mm&ff a few years back. Engine dyno, etc. still a nice read. If you're half aware of the dynamics at play, it spells out nicely what goes on. They did mild cams without beadwork no less. Gained 30hp on an eaton and more and more as they went kennebell.

Run 19psi, and a stronger head/cam combo, it would easily be 850hp at the crank, about 725whp.

 

[xxjaymanzxx]

I saw that too and was skeptical, I don't think he is lying I just think it's a happy dyno is all every dyno and car differs so much

 

[cj428mach]

http://www.mustangandfords.com/how-to/engine/mmfp-1212-cam-and-blower-upgrades-power-players/

Eaton mild cam only, not degreed optimally
View attachment 90395

Kennebell 2.8, 15.8psi, mild cam, stock head, early shut off, etc.
View attachment 90396
Here's a nice write up and test by mm&ff a few years back. Engine dyno, etc. still a nice read. If you're half aware of the dynamics at play, it spells out nicely what goes on. They did mild cams without beadwork no less. Gained 30hp on an eaton and more and more as they went kennebell.

Run 19psi, and a stronger head/cam combo, it would easily be 850hp at the crank, about 725whp.

I was thinking of that exact magazine article when I read this. Sounds possible with more boost.

 

[Zemedici]

That power out of any kenne bell is a miracle....hahaha

dyno numbers dont mean shit guys, you can make a dyno read whatever you want to. Its merely a tuning tool. What matters is how the car stacks up against similar power cars, whether it be via ET or on the street.

I'd rather have a strong running 650whp car that actually makes 650, that a '718whp KB' car that will get YANKED by a 650whp car....