F1_SS

That right there is a bad dude. If they ever come out with a mass producted TT kit for a good price i will demod my cars setup and go with that.

<--Waiting for final numbers on Kenne bell

#001 2001 Z06

I look at new stuff a bit differently, as the new setups definately make more power down low, in the middle and at the top.

As much as the STS setup if different in design, look at the new Audi ALMS car. Turbo diesel, power band 1,000-3,500, 800-850 pounds ft. across the board. I would contend that this car will go the full 24 hours of Le Mans. Audi is second most wining team in La Mans Series history.

In any case, it is all interesting.

bernrex

That concerns me too. Mine did the same ... but, it was caused by LS1 valve float ...which has been corrected. Perhaps his valves or fuel supply are not optimal at the top end. Then maybe they let off early @ 5500 ... so he could be under-rated and surprize his competition.

Cajun ... what do you think happened at the top?

kumar75150

why is the AFR at only 10.5? Conservative isnt the word I would use.

and why only take it to 6000rpm? are they breaking in the motor?

pianoprodigy

If you'll look at most turbo LS1 dyno graphs you'll see the same thing actually. It comes from inadequate flow at the top-end. Turbo sizing is all a matter of balancing spool with flow. Make the turbo too small and you'll spool nice and fast only to drop off in the top. Make the turbo too big and you have too much of a centrifugal feel to the spool although it will pull all the way to redline.

Cajundude

Hmmmm...how did I get brought into this? If someone would send me a $2000 fuel system for free I'll let ya'll know.

As far as which setup is better, I'm not gonna speculate, but I will race anytime just to find out. If there is anything good about the STS kit, it is the little, and I mean little, lag that I do have. I can take off from the line and go. I'm not immediately frying the tires until I reach full boost when it is EASY EASY to fry the tires at 100+ mph. How do I know? I did it about 2 hours ago.

One think I love about this kit is when I stomp it it pulls me back in the seat. When I hit 90 mph, about 3-3.5 secs. later from a roll the car kicks into I don't know how to describe it, except maybe warp speed. The whole car feels like it lifts a little and then pins you to the seat like the fat girl from Friday night. It is pretty wild to say the least. Very smooth, but BAM, it's on like Donkey Kong. I've never driven a positive displacement blower car so I can only assume those characteristics of driving and I try not to say anything unless I race one win or lose, which I haven't had the opportunity to do so yet.

Cajundude

BTW, the 5500 drop could be one of two things. My boost controller blows *****, so I am getting a new one as it has already caused problems twice or the turbos are maxed out, which I think they are certainly getting close. Dave South (STS) was quite suprised when I told him my numbers with the T3/T4 base turbos. I may be upgrading to the T60s through. Before I do that I'm gonna make sure these are maxed out. I'm not sure where all my fuel is coming from but I am good so far with what I have which is the stock system, KB BAP, and Ractronix. With the new controller I'm gonna put in 14 lb. springs and see what will happen.

Still trying to decide which controller to get.

mdhmi

I agree that the current 9 second field is composed mainly of cars with that pull harder on the big end. The question is why.. Traction is one possible answer. Another would be that up until recently the power adders available that hit very hard early in the power band (TTi Stage 1/2/3 for example) couldn't sustain the power until redline.

Mark

Cajundude

Mid to back end is where it's at. I launched at a measly 3800 my first run at the track. My mph was 110 at the 1/8th. The run that kicked me off the track was another baby launch with over a 2 sec. 60', I tried to keep my mph low as well as ET so I wouldn't get kicked off. Even off full throttle I pulled 136 mph trap.

R&D

Do you really think that KB is going to pull 835 whp???

You should add Andy's two old fashion centrifugal SC to your list. I think at the boost level they will show that some of the newer offerings aren't quite the better mouse trap that many believe.


Jeff,
Looking forward to your numbers! Your car looks VERY VERY nice! I'm going to guess 715 rwhp.

FAST LS1

I hate to say this but I'm going to call it like I see it. The average corvetteforum member is no pro drag racer. Given that first variable, a Kenne Bell car like American HP's will be faster in the hands of the average vette owner vs a turbo or centrifugal s/c car. The extreme low end trq and liner power will allow less than great drivers to drive the car more easily down the dragstrip.

If you want to compare all out applications, it all still comes back to planting the power, and who has more area under the curve. All the cars have to launch, so the low rpm trq of the KB is a huge factor in that launch. After that the turbo and centri S/C'ed cars "may" have an area under the curve advantage. From the graphs posted it doesn't look like any of the kits have a definite run away advantage. Dyno graphs are worthless if you want to talk about ET's. The Supra guys have proven 1000+rwhp packages, but I don't see a lot of those same dyno queen Supra's running 8's like the dyno graphs may lead you to believe.

sturgeon90293

my guess with 12 psi is 715 rwhp

mdhmi

Have you had both a C5 with a centrifugal supercharger and a twin turbo system? I have. And because I have I feel I can say you are dead wrong.

The centrifugals are MUCH easier to get down the track.. Traction is easier as the power is delivered more slowly. They have extremely predictable power bands.

The turbo car, on the other hand, is ten times as much few as the turbos spool quicker and harder, however it's much more challenging to get down the track without lighting up the tires in every gear.

Cheers,

Mark

peter pan

[QUOTE=R&D]Do you really think that KB is going to pull 835 whp???

You should add Andy's two old fashion centrifugal SC to your list. I think at the boost level they will show that some of the newer offerings aren't quite the better mouse trap that many believe.

Those two cars rock and they forgot to add my little ole 346 A&A DS1C Setup that has all of Andy formula as only the LS2 setups or the 427 have more than my very old and given to the scrap heap system or Mikes99Corvette 383 A&A DS1C that is just short of 700rwhp/600tq, oh his will be atleast what mine puts down once he gets the fuel problem fixed with his ECS fuel setup. Put a F1R on his or mine and we will have some numbers that are very nice, and will not have the tq under the curve though that Jeff's KB will but mine pulled like a train all the way to shutting on the run

chriswtx

I wonder what "issues" they ran into that kept them from posting final number yet...

kumar75150

You dont have to be a very good driver to launch a car. My first launch ever on slicks was a 1.52. I was scared ****less. On street tires (like the avg corvetteforum member), a Kenne Bell car will be slower in the hands of an amateur because of lack of traction. Power under the curve is sweet if you are driving a Honda or road racing a lot or you dont know how to shift, but its overrated in the V8 world. I want max power between 5000-7000rpm.

And Supras that want to run 8s can easily do so.

edit: I hope Im not sounding like an ***. Im just a big proponent of top end power.

kumar75150

It doesnt take but a couple hours to do WOT tuning.

mdhmi

All one off combos have initial issues that need to be ironed out.

Mark

#001 2001 Z06

Guys,

I know they got the final numbers done late last night.
I know Jeff or Rick will be posting the numbers when they get a chance.
I do not have the slightest idea of what they are, as I have be in meetings all day..

Yes, if they threw another 500 rpm, to 6,500, it would make a lot more h.p.. If they turned on the Meth it would make more h.p.. Timing was minimal last I heard and the AFR was 10.5 to 1.
The graph was moving straight up, last time I saw it.

Remember the car was almost a complete frame off, as well as a full motor and drivetrain build and yes there are about half dozen tricks to setting up the KB properly.

Pakisho

I talked to Rick today.

He said they are pretty much done with it. The final number is what Brent posted earlier. 690rwhp and over 700rwtq. Apparently, the car is pretty much never under 650rwtq throughout the entire pull, from start to finish. Thats some Godzilla torque.

"Finishing tweaks" were things like recharging the AC system, etc.

He isnt spinning it to 6500, so dont expect a graph, from what I understood. Rick said he'd take a 346 that high, but he said a setup like this was already potent enough at 6k, plus I would imagine he is dialing in a certain degree of safety, given that the car is a pump gas setup out in hot hot las vegas. So Im guessing that while theres a ton more in it, he's not going to pull any tricks simply for the dyno to make the number.

Hope Im not jumping the gun, since its not my project or my car. Apparently it idles and drives extremely docile and its an absolutely evil sonofabich when you get on it. And yes, they really did pull the car to pieces and redo the whole damn thing. The last time I was at synergy, this car was a yellow coupe with no motor, no tranny, no body work, nothing.

Bad ***. I love my current setup. But if I didnt own a blown z06 to start with, I know without a doubt where my money would go. Props to Rick for getting it done.

Congrats Jeff! Post impressions!!!!!