I just ran in the Cartek Corvette Challenge yesterday.
http://www.corvettechallenge.info

This is the best I could do with my factory stock Z06 the first time out on a very hot day. I am car 914, the other car was an LT1 6-speed. I would say that my results are unimpressive, but a lot of other stock Z06 cars were running worse. Running a quick E.T. as not as easy as most people think.

 

It takes a lot of practice to run consistently fast. Keep going...the times will drop. :yesnod: :cheers:

 

Thats still a good time for your first time out. Yesterday was far from ideal conditions. A lot of guys where off 3-4 tenths cause of the heat. Combine that and if you had a better 60ft. and you would have been in the low 12's. You gave me a run for the money in the last time trial. The best 60ft. i got all day was only a 2.08 on street tires cause the track was a tad slick. The real question here is why did you trap 112.5 and i only had 113 with aprox. 40-50 more rwhp. Oh well, I'll take care of it this week with some LS1 edit. Oh and i made it home ok but the clutch smells like its always burning now. Hope to see ya at the next challenge in 2 weeks. :cheers:

 

My car dynoed 354 RWHP in stock form. I would be surprised if you were in the 395-400 RWHP range. That kind of power would yield close to 120 MPH in the 1/4. I guess a dyno run will tell all. Glad you made it back.

 

Well i had 370 with just the exhaust and blackwing. If you look at some of the posts on headers the FLPs work better with the LS6 and most people gain at least 20rwhp and some as much as 35rwhp. Thats what i used to base my estimate of about 390-400rwhp. My car is running rich and that is hurting power but i know with tunning i will without a doubt be over 390rwhp. I also think the low trap speed might have been because of the clutch going bad. It might have been slipping(it didnt feel right all night) and not getting all my power to the back wheels. Dave at cartek said i should be in the 117-118 with my setup so your pretty close there. I gotta check out whats wrong. Im gonna get the new clutch and maybe go to a test and tune night to see if my trap improves from the better clutch. I'll keep you posted. :) :cheers:

 

:cheers: on your first times. Launhing a M6 takes practice

 

Also etown is a slow track. You would have had a 114-115 trap at atco or anywhere else. Not that it matters though cause either way i only trapped .7mph more than you.

 

Why is it that the Corvette challange are at a drag strip,

and

The Ferrari challange are at road courses?

 

Excellent time!

Don't think that you are far from the mark others are setting... I think that a few guys run really fast, and that is "the mark to hit" so everyone feels bad if they aren't hitting those times. Any factory car than runs 12's is soemething to be admired. I have seen Z06's running 13's and I've seen Vipers run 13's too - but I never see these folk posting on the boards. A lot LESS people run low 12's and 11's than you think.

As for your timeslip... if you don't mind a little constructive criticism:

Your 60' shows you launched very easy or you spun alot. If the former, you can try to launch harder and harder until you spin, then back off a notch. Englishtown is one of the fastest tracks in the USA (I dunno what that other guy is talking about), because they spray the whole track. I can launch the Viper at almost 3,000RPM's and it just sticks like glue. You can probably launch much harder and use the clutch to feather the power to the point the car literally jumps forward. If you get those 60' times to the 1.8 range, you're already running 12.5's with that MPH.

Now, if you shift faster - work on shifting as fast as possible. If you don't shift quick, you are losing valuable acceleration time to shifts. If you shift quick and maybe raise your shift RPM a bit (dont hit the limiter! That will slow you down), then you can easily add 3-4mph, which will give you another couple of tenths off your time.

So, with these two small changes, you will be running low low 12's at 115-116mph. Get to the track on a cool day where it's really sticky, get a perfect launch, nail your shifts, and you will be in the 11's and can hit the 117mph range.

It's not NEARLY as easy as it looks, huh? I have run mid-high 12's probably 10 times for every run that was a 12.1 or better. Hope you had fun - thats the most important thing.

 

I'm talking the MPH is low there. Atco usually gives a higher MPH. I think there was a topic about it in the NE section a while back. The same car at atco will trap 2-3more mph on even if you run the same time. The track was hooking pretty well that day but I can't see someone getting a 1.8 60ft. on these F1SC tires. With DRs it should be no problem. Let me get my timeslip up so maybe you can give me a little advise too. I need all the help I can get.


[Modified by kh24, 1:54 PM 7/17/2002]

 

Do you know the elevation at Atco? I know my track is something like 600' above sea level. Usually the trap speed is due 99% to power, which is alot to do with the density altitude.

To be honest, Power Shifter is more knowledgeable about that stuff than I am.

I will say though that often your best ET will be your worst trap speed. I have run 11.6's at 116mph, and 12.3's at 121mph. Is Atco the track on LI that has the big bump to keep you awake at 2/3rd track? That was fun :)
:lol:

 

rbatrick - Congrats again.

KH24 - There are plenty of folks turning 1.9 or quicker on the F1SCs. I can nail down a 1.8 on just about every pass. My best 60' are in the mid 1.7s

The big thing on them is to drop the pressure a bit. I run 22psi in the rears, and I run 50 in the fronts.

ETown is from my undertanding a fairly good track. But some of the other guys run out there somewhere and can comment better on that than I can. I am a Houston boy. So HRP is where I go...

 

I had 31psi in the front and 27psi in the rear. I'll give it a shot and lower it some more but I should have DRs buy the next challenge and I'll probably be using them. I gotta get my slips up for some pointers. I notcied in one old slip my 330' time was a 4.483s with a crappy 2.42 60ft. I missed all the shifts after that and just coasted threw but that is way too low. The car next to me had a 4.85 and he ran 11.47@121.19. That has to be some sort of error cause i usually have a 5.5 and my time usually is in the mid 12s.

 

Congratultions on coming out to Corvette Challenge, runnig a very decent time with a 6 speed and winning first round. That sure is a beautiful trophy. I am glad you are proud of it. You earned it.

As for time, my car was running about ..3 slower than I expected it to. Your et will be better with more runs and yes others with the the same car/horsepower did not fair as well.

Keep up the the good work and cya at the next challenge.

 

This is meant as food for thought and not brought up as anything else. Good tracks, and not so good tracks, all have to setup there timeing beams regularly, you would be surprised at the differance seting them "correctly" can make. All the setings have to be made very carefully and I beleve the good faith effort is being made by most tracks, but there are variences that have big effects. The areas you will norice this varience, is in roll out between lanes, and week to week, and allso mph, lane to lane, or week to week. Some of the change you notice can rightly be ascribed to track and weather condition but some can not. I know the varience we see in mph, track to track, with our cars has to do with the procedure differance in beam setings, track to track, as well as the other factors. Any one that is saying understanding this stuff is simple, is more than likely a simple or inexperienced person. MrGTS, NED is listed at 90ft, your a very large fellow so it may be 600 for you.;) Ric

 

I've got some stuff up my sleeve, I promise to go faster next time. :)

 

"large fellow" what does that mean Ric??? Are you trying to tell me something? :lol: :lol: :lol:

kh,

I'm sure some of the knowledgeable folks (like Ric, not me LOL) can give you some better advice if you can post those slips, but if you got a 2.4 60' time then you either bogged BAD or you spun like crazy. It's so hard to describe technique it's just sort of a "feel" you get. I launch usually around 2,500-3,000RPM and I try to feather the clutch quite a bit... but I am going for the best time each and every run. I sometimes nail it, but often spin the tires because I'm always looking for that perfect launch.

If you try launching with some more RPM's maybe around 2,000 and use the clutch to keep it just on the edge of traction you should be able to get those 60' times down to the sub-2 second range. Anything in the 1.9's is pretty good, 1.8's is excellent, and 1.7's is outstanding. A 1.9 60' time with proper shifts going down the track should be good for a low 12 second pass.

I haven't driven the Z06 on the dragstrip though so I'm just talking about past Viper experience. Ric is 'the man' when it comes to driving the Z06 at the strip.

 

The issue was the 330' foot time wasnt making sense. I know i gotta get the slips up. I am getting better. Last week i had a 2.08 60 ft. and a 2.11. When i ran against ross we both spun and i had a 2.25 but the next run after that my clutch broke and i had a 2.31. Im starting to get the launch down. This is my best run to date. 2.08 60ft. and 1/4 in 12.63@113.27mph. This is with headers exhaust and blackwing and it was on a 88 degree day. It was also only my 3rd time out at the track ever. Is that a good time. The MPH looks low compared to Ross's stock car. I think i am loosing top end power with the WOT trim being too rich. Thanks guys for the help. :cheers:

 

Mr GTS,

Well I would not feel comfortable calling my times excellent. I pulled 60' times in the 2.1, 2.2, and 2.3 range. As far as my technique goes I revved to about 2300 RPM and slipped the clutch out fairly slowly. I did not go full throttle until the clutch was all the way out and I was at about 4000 RPM. It did not feel like the car was bogging, but to be honest I am really not sure. I powershifted 2nd at about 6300 RPM, shifted off the gas into 3rd at about 6300 RPM, and powershifted 4th at about 6350 RPM. I used the dash tach and shut off the HUD. I figured my soft launch would be better than burning the tires all through 1st. This time out I was not concerned with reaction times at all. Next time out I will be a bit more aggressive. I hope to get better reaction times and better 60' times.

That was not my first time ever on a track. I used to get very good times in my old C4 L98. BTW - My bro has a GTS.

 

Mike, SUV's come to mind;) I can't see over or around them either. :jester Ric