This was my first time drag racing the ZO6. Launching was very difficult and I was using stock F1's @ 25psi. My mods are listed below and I recently dyno tuned at 407 RWHP.
Did I do ok. I was hoping to get in the 11's.
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You'll never soar like an eagle, if your surrounded by turkeys.
This was my first time drag racing the ZO6. Launching was very difficult and I was using stock F1's @ 25psi. My mods are listed below and I recently dyno tuned at 407 RWHP.
Did I do ok. I was hoping to get in the 11's.
David,
A perfect reaction time is .000, good 60' times with the F1's are in the 1.7-1.8 range. If you can get those 60' times down, you will get real close to the 11's, as your 1/4 mile MPH
shows that your car is making the power necessary to get you there! My best 60 so far on F1's is 2.02, so I know what you are up against. Try lowering the pressure to 20 psi and practice shifting as fast as you can. IMHO, you did great for your 1st time on a drag strip! These cars are not easy to launch, especially on stock tires. THe more runs you get under your belt, the better your times will get. Practice, Practice and more Practice.
__________________ sig by GR8 White
'03 EB/mod blue VE interior, LME-LS3 Stroker, AFR 225's and a nasty cam from Pete at V-MAX, 3" custom Powerstick exhaust and lots of attitude! Any questions? Z06 Fest member III, IV, V, VI, VII, and Winterfests 1&2. new times coming soon!
David,
A perfect reaction time is .000, good 60' times with the F1's are in the 1.7-1.8 range.
Sub 2.0's on stock F1's is extremely difficult on an average track and conditions.
1.7 to 1.8 are times that are not likely.
Those are average times for Drag Radials.
That's very good for your 1st time. You'll need more seat time to do better. Your car should easily do 11's w/ your horsepower, but you have to get the launch down as mentioned above. I went 13.0 my 1st time to the track!!
1. For every .10 improvement in 60' time you pick up .15 improvement in E/T, I have run many 1.8X 60' times on stock rubber, so with practice you will do much better, this wasn;t bad at all for first time out.
2. Your MPH is, IMO, a little low for your RWHP - I trapped 120 MPH with 383 RWHP on stock tires, thogh density altitude and track conditions will play a big part in that. I suspect that you are short shifting a little - let it run up to red line before shifting.
3. With that power, add drag radials and seat time and you are in the 11's - easy.
Les
Quote:
Originally Posted by DavidGP
Can someone analyze my time slips for me. Sorry I dont have a picture of it. This was my best time. Here is what it says.
This was my first time drag racing the ZO6. Launching was very difficult and I was using stock F1's @ 25psi. My mods are listed below and I recently dyno tuned at 407 RWHP.
Did I do ok. I was hoping to get in the 11's.
__________________ [sold] 02 QS Z06 383 c.i.
441 RWHP 445 RWTQ, FLP Long Tubes & GHL Quads, 42# Injectors, LS1 Edit Tuning, Vararam w/T1 C. F. Bridge, Vinci 170 Stat, Ripper Shifter, Lowered and Tinted
I must also add that I was not powershifting. I let up in every gear a slight bit but shifted fast. I tried to shift every time at around 6400 RPM. I dont know if that is too low considering I had LS1edit done and I have a lighter valvetrain with the titanium retainers. I dont know if that makes a difference or not.
Also it seemed that since everything was happening so fast, I was finding myself shifting as it approached redline versus beginning the shift at redline. This could have made a difference as well. I guess I will need to go back sometime soon and practice a little more to get in those 11's.
I think that your times are good for a newbie at the track. I also think the HP rating sounds low with the mods you have on the car.
Practice is the best way to get those times down, plus a pair of drag radials or ET street would help A LOT.
I have an '03 Z06 with ET Streets and a B&B Bullet exhaust. I am in the 1.78 60' time and I run my 1/4 mile in 12.01@115, and that was in 30mph headwinds.
Before the Z06, I ran a low 11-second Mustang at the track for a while. The launch techniques are VERY different with the Z as opposed to the Mustang. I had slicks and skinnies on the Stang, 5 speed with a slightly modded motor and a 150hp shot of NOS, right off of the line. The car ran a 1.49 60' time and an 11.44 at 115. The 60' time, ET and HP all mesh with each other. With the Stang, I was able to launch at 5500 and DUMP the clutch and the car took off like a rocket, wheels up and all!
So, the launch is something I'm having a lot of trouble with, especially now because I slipped my clutch very bad last weekend. I'm sure it's the key to improving your ET.
Get to the track, practice the launch A LOT. Just launch the car, don't do full runs. It will help preserve the cars mechanical works. Launch, Launch, Launch. Not in the street either. The track and the asphalt is very different, plus it's illegal and dangerous on public street.
Good luck and please keep us up to date on your progress.
I think that your times are good for a newbie at the track. I also think the HP rating sounds low with the mods you have on the car.
Thats what i thought too. The guy that tuned the car said his dyno might be a little conservative. I am running stock Cats and he said with high flow I should be seeing close to 420 which is what I was hoping for to begin with.
Also apparently my DIY thermostat is not good cause he was seeing temps of 198-200 while dynoing. I should have been in the 185-190 range.
My problem was that I was either spinning the tires too much, which only happened once or twice or the tires would hook up soo well that after that initial hook up, the car would fall flat on its face cause I was not applying enough throttle. I had a total of 5 runs the entire night.
I think you did well also. Anything in the 1.8-1.9 range on f1's is very good. With 407rwhp, you need to really finesse the launch. I would lower the pressure to 16-20psi and do a real burnout. That should help a bit. This will also help your shifts from 1-2 and 2-3. Do not powershift,it will only make you go slower due to wheelspin on f1's. On a good air day you should see trap speeds around 122.(with good driving). 11's are definitely doable with more seat time on F1's but it will be a high 11. Just my .02
__________________
03 Z06 H/C
10.22@134+
Best 60' 1.41
I can't imagine sub 2.0x 60's on F1s either. I would guess bringing the revs up pretty high 4000-4500 and slipping the clutch a LOT might do it.
I just don't like replacing clutches that often.
David, I do not think your times are bad. The MPH does seem low, but you're in FL, so the air isn't good there most of the time. When racing, always keep track of the day's weather conditions if possible. Temp, baro. press, humidity. If a racer at the track has a density altitude meter, ask him for the data that day/time. It helps when trying to compare one track day to the next and against some of these guys who run at DA of 500-1000' below sea level.
__________________ '02 Z06 (606rwhp/594rwtq)...LPE/21CMC Stage 2 Twin Turbo
'04 SVT Lightning (459rwhp/534rwtq)
'06 300C SRT8
'06 Trailblazer SS "IF YOU CAN BEAT MY TRUCK, THEN YOU CAN RACE MY VETTE!"
Well, it seems as though you had some good air. Not sure what the elevation is at your track, but I plugged the numbers in. If the elevation at you track was 0, the DA was actually -360. So the air was fine. Do you know the elevation or what was the name of the track, I could figure out the exact DA then.
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I was hoping to get in the 11's.
sig by GR8 White
Any questions? 
Z06 Fest member III, IV, V, VI, VII, and Winterfests 1&2. new times coming soon! 
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