11-29-2014, 07:20 PM | #1 |
Drives: 2017 ZL1 Join Date: Aug 2009
Location: Maryland
Posts: 1,052
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Another new best stock time. Lessons learned.
Today we made the trek up to Cecil county dragway. It has become an annual trip that almost certainly guarantees breaking personal records.
My pass went like this 60'.... 1.681 330'....4.846 1/8.....7.468 @ 94.15 1k......9.702 1/4.....11.591 @ 119.27 The lessons I've learned over the last couple weeks are quite in contrary to what I've read on these sites over the last couple years. Now I'm not saying that the tips I picked up are guaranteed to work for everyone, but I can tell you guys most certainly that this is what worked for me. Lesson 1... the burnout. Previously I had learned that a quick "scrub off" of the tires is all that's necessary for these things too hook. What worked for me... a long smoky burnout almost up to the line. I know there will be a concern about iats getting too high, which is why I make sure I have a long enough cool-down to get the proper burnout without having to worry about getting too hot too quickly. Lesson 2.... tire pressure Previously it was thought that anywhere between 24 - 28 psi was optimum for these tires What worked for me. Between 30 - 31 psi. Like I stated before, it may not work for everyone... but the person that taught me these techniques is currently number 1 on the stock ZL1 list. He has pulled consistent mid 1.6 to low 1.7s 60' times with his own car. To prove to me that it works, last week,he drove my car to a 1.65 60' on his second pass, on a day when I could not get the car to hook at all using my old method. I have now bettered my previous best 60' of 1.73 several times today.
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'17 ZL1 10.99@129 stock. 4225# raceweight. Best 60'- 1.66 on factory tires. 10.48@132 E50, intake and tune. 4270 lbs
https://youtu.be/EyHtdH9XOkY https://youtu.be/Lcu41obbTf8 '13 ZL1 BRM A6. 11.591 @ 119.2 factory stock with a 1.68 60'! Best stock mph 121.8. 11.29 @ 123 RotoFab, drag radials and skinnies. 4360# raceweight. http://youtu.be/yggIA3C_kkA 2014... back to stock http://youtu.be/spQLaTWbThs 2013... stock & RotoFab |
11-29-2014, 09:06 PM | #2 |
Drives: 2013 ZL1 A6 Join Date: Sep 2013
Location: Madison, Wisconsin
Posts: 199
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Incredible. I can't come close to that 60'. Would you be so kind as to share your a little more about your launch technique? T/c on or off? What RPMs are you loading it too, if any? etc.
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11-30-2014, 01:56 AM | #3 |
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Nicely done. Congrats
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Todd in Vancouver
'14 ZL1 Camaro '67 Camaro SS Pro-tour in process How hard can it be... Check out my other build http://www.pro-touring.com/threads/9...ject-Obsession |
11-30-2014, 02:11 AM | #4 |
Drives: 2013 ZL1 A6 #7860 Join Date: Apr 2014
Location: CO, USA
Posts: 1,279
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11-30-2014, 05:09 AM | #5 |
Drives: '21 ZLE A10 Join Date: May 2012
Location: Mechanicsville, VA
Posts: 6,808
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Good job Dave. You don't have to worry much about IATs when the ambient is in the 40s.... Getting some heat in those cold tires is more important. We all know how the stock Goodyears are when cold...hockey pucks. I am surprised about the 31 psi for the rears. I ran the stock Goodyears only once at the track and my typical street tire pressure for the dragstrip of 22-24 psi seemed to work...my best 60' was a 1.72. That was a nasty 90 degree day and any pressure would have hooked is my bet. Congrats again!
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'21 ZLE A10 Wild Cherry PDR 2:00.78 VIR Full 10.68@131.69 1.68 60'
'17 ZL1 A10 Mosaic Black PDR/Nav 2:03.08 VIR Full 11.003@129.2 1.75 (sold) '15 Z/28 #325 Black a/c & stereo. 2:10.1 VIR Full (sold) '12 ZL1 A6 Black 10.52@131 1.55 60' 2:13 VIR Full (sold) |
11-30-2014, 05:40 AM | #6 |
Drives: 2017 ZL1 Join Date: Aug 2009
Location: Maryland
Posts: 1,052
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What I found out is that these tires need HEAT! A quick scrub to get the tires clean is just not enough. Believe me, I have a lot of passes in the car in the last 1.5 years. I've tried different methods of launching, different tire pressures, and raced at different tracks. If the track is poorly prepped, though, I don't think it'll matter how well heated the tires are. Once staged, it's matter of getting a feel for the track. On this pass, I actually loaded up the converter a little, released the brake, then fed in the throttle quickly when I detected no slip. The track had really come around by this time because I wasn't able to be this aggressive with the throttle earlier in the day.
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'17 ZL1 10.99@129 stock. 4225# raceweight. Best 60'- 1.66 on factory tires. 10.48@132 E50, intake and tune. 4270 lbs
https://youtu.be/EyHtdH9XOkY https://youtu.be/Lcu41obbTf8 '13 ZL1 BRM A6. 11.591 @ 119.2 factory stock with a 1.68 60'! Best stock mph 121.8. 11.29 @ 123 RotoFab, drag radials and skinnies. 4360# raceweight. http://youtu.be/yggIA3C_kkA 2014... back to stock http://youtu.be/spQLaTWbThs 2013... stock & RotoFab |
11-30-2014, 07:50 AM | #7 |
Drives: GM Join Date: Sep 2010
Location: Marydel, DE
Posts: 1,321
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Congrats God forbid if you really start modding that thing lol. hellcats
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Roto- Fab Cai, SLP 1 3/4" headers, 3"X pipe, LM2 cat back, Comp Cam & AI Heads, SLP UP, RPM Tuned, GPI Intake, Vmax TB, ADM Air Scoop, 3.91 Gears, Gforce driveshaft, Braille 21#, Elite Catch Can, Pfadt Tie Rods, Diff Bushings and Trailing arms, Eibach spings & sways, BMR cradle bushings, Nt555r's.
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11-30-2014, 08:54 AM | #8 |
Drives: 2016 Camaro 2SS/RS Join Date: May 2014
Location: Southern Maryland
Posts: 31
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Congrats again Dave!!!!!! Great driving yesterday. Time for some mods lol
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2016 Camaro 2SS/RS Nightfall Gray 6Speed Manual Stock 12.09@115.95 with 1.96 60Ft Goodyear F1 Run Flats
2020 Silverado Crew Cab RST 2011 Camaro 2SS/RS 6speed Manual Stock 12.94@111 2.1560ft after CAI, 1 7/8 SW Pro Headers, Tune, and MG Flow Catback. 12.18@116.95mph with 1.9760 ft. Nitto Nt555r Drag Radials. SOLD 1998 Camaro Z28 Auto with all the goodies 11.26@119 1.54 60ft. SOLD |
11-30-2014, 08:56 AM | #9 | |
Drives: 2013 ZL1 A6 Join Date: Sep 2013
Location: Madison, Wisconsin
Posts: 199
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Quote:
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11-30-2014, 01:59 PM | #10 | |
Drives: 2017 ZL1 Join Date: Aug 2009
Location: Maryland
Posts: 1,052
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Quote:
__________________
'17 ZL1 10.99@129 stock. 4225# raceweight. Best 60'- 1.66 on factory tires. 10.48@132 E50, intake and tune. 4270 lbs
https://youtu.be/EyHtdH9XOkY https://youtu.be/Lcu41obbTf8 '13 ZL1 BRM A6. 11.591 @ 119.2 factory stock with a 1.68 60'! Best stock mph 121.8. 11.29 @ 123 RotoFab, drag radials and skinnies. 4360# raceweight. http://youtu.be/yggIA3C_kkA 2014... back to stock http://youtu.be/spQLaTWbThs 2013... stock & RotoFab |
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12-02-2014, 01:07 AM | #11 |
Banned
Drives: 13' ZL1 Join Date: Nov 2014
Location: NY
Posts: 311
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Awesome time man! Really it is... but Correct me if I'm wrong the car is an auto right? I know optimal tire pressure, and heating the tires , etc. all matters but after that it's just push the pedal and go. Computer shifts for ya, no?
So why does a person get props and praise for a time that probably many can duplicate given the same conditions , like the person you refer to as your mentor? Please don't take this the wrong way, I'm just trying to get some insight. Thanks. Sent from my SM-N900V using Tapatalk |
12-02-2014, 02:59 AM | #12 | |
Drives: 2017 ZL1 Join Date: Aug 2009
Location: Maryland
Posts: 1,052
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Quote:
I would be willing to bet that these same procedures would work with the manuals and we would probably start seeing them run in the 11s stock.
__________________
'17 ZL1 10.99@129 stock. 4225# raceweight. Best 60'- 1.66 on factory tires. 10.48@132 E50, intake and tune. 4270 lbs
https://youtu.be/EyHtdH9XOkY https://youtu.be/Lcu41obbTf8 '13 ZL1 BRM A6. 11.591 @ 119.2 factory stock with a 1.68 60'! Best stock mph 121.8. 11.29 @ 123 RotoFab, drag radials and skinnies. 4360# raceweight. http://youtu.be/yggIA3C_kkA 2014... back to stock http://youtu.be/spQLaTWbThs 2013... stock & RotoFab |
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12-02-2014, 03:07 AM | #13 |
Going for Plaid
Drives: 2011 C6 Join Date: Jan 2010
Location: Phoenix
Posts: 885
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Yes it's easier than a stick shift car, but you still have to know how to launch and get a good 60ft.
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2014 ZL1, manual trans, carbon hood insert, Rotofab, Pacesetter 1 7/8" headers, 1" drop BMR springs, stock pulleys, 91 octane tune, 545rwhp & 515rwtq
Serviced and modded by Cordes Performance. 2011 C6, 750rwhp, forged LS3, ported LSA heads, Vortech Ti-trim, 227/243 115+4 Lunati cam, ported LS3 intake, Alky Control methanol, Pfadt sways/shocks/trans mounts, Pfadt tri-y headers(Sold 6/28/14) |
12-02-2014, 05:52 AM | #14 | |
Drives: '21 ZLE A10 Join Date: May 2012
Location: Mechanicsville, VA
Posts: 6,808
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Quote:
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'21 ZLE A10 Wild Cherry PDR 2:00.78 VIR Full 10.68@131.69 1.68 60'
'17 ZL1 A10 Mosaic Black PDR/Nav 2:03.08 VIR Full 11.003@129.2 1.75 (sold) '15 Z/28 #325 Black a/c & stereo. 2:10.1 VIR Full (sold) '12 ZL1 A6 Black 10.52@131 1.55 60' 2:13 VIR Full (sold) |
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