Best dragstrip prep and launching A10 with DR's

Solid_Sim · 07-19-2018, 06:47 PM

Hey guys,

With my break-in almost finished, the time to test my ZL1 on the 1/4 mile is coming in fast and I've been searching and reading all the forums, I can't seem to find the perfect way to launch my A10 ZL1 if I'll be on M/T ET Street R 305/45/17 on a sea-level track. Track is slippery tough, but I'm confident I'll get 1.7 60' if I manage to launch right.

But... with or without launch control? What settings? (% slip, RPM etc)

Or people seem to get better results without LC (track mode all nanies off?) but would I launch from idle with the DR's or from 1500 or more RPM?

What PSI do you recommend I put the tires also?

Thanks for your help!

7WSM · 07-19-2018, 06:52 PM

I have those exact tires and with a good burnout, it will hook with just about any launch RPM, any mode including everything off. On my stock car, it sixties around 1.77-1.70.

Solid_Sim · 07-19-2018, 07:00 PM

Quote:

Originally Posted by 7WSM

I have those exact tires and with a good burnout, it will hook with just about any launch RPM, any mode including everything off. On my stock car, it sixties around 1.77-1.70.

Oh wow nice!! And how did you get your best 1/4 mile time? With or without launch control?

And what pressure you run 'em??

7WSM · 07-19-2018, 09:05 PM

Only have ran them so far in 90+ degree temps, but have been 11.30s @121 MPH. This is with and without any launch control. Only was able to get a little faster times if I let the car cool down for a hour or so. If I hot lap it, it will run in the 11.40s-11.50s in the Summer. I usually start at 20-22PSI of air. Usually I drive to the track with the radials already on and use these https://www.amazon.com/dp/B00QBPBLWY..._t2_B075ZBMVF4 to deflate them. I have them set to 20PSI. It's a little trick I learned going off road.

I also use these while I am in the staging lanes as well since I don't run TPM sensors on my Weld setup. https://www.amazon.com/dp/B01J580F2K...&pd_rd_w=vAgNG

Stephen12ZL1 · 07-19-2018, 09:39 PM

turn all nannies off and don't use PTM or launch control. Hold down the traction control button for 5-7 seconds until both stabilitrak and TC lights illuminate. Do a standard burnout and brake torque to 1100 rpm and go. The torque management is terrible in 1st and 2nd gear so the best 60' you will manage should be 1.69-1.74. Leave the gear selector in "D" and don't use the paddles. On the settings screen, default the exhaust to Track and suspension to "tour". Place the console button in sport to utilize the performance shift mode. Have fun!

Solid_Sim · 07-20-2018, 07:58 AM

Quote:

Originally Posted by 7WSM

Only have ran them so far in 90+ degree temps, but have been 11.30s @121 MPH. This is with and without any launch control. Only was able to get a little faster times if I let the car cool down for a hour or so. If I hot lap it, it will run in the 11.40s-11.50s in the Summer. I usually start at 20-22PSI of air. Usually I drive to the track with the radials already on and use these https://www.amazon.com/dp/B00QBPBLWY..._t2_B075ZBMVF4 to deflate them. I have them set to 20PSI. It's a little trick I learned going off road.

I also use these while I am in the staging lanes as well since I don't run TPM sensors on my Weld setup. https://www.amazon.com/dp/B01J580F2K...&pd_rd_w=vAgNG

I'll also arrive with the DR's already on the car.. So best pressure is 20 psi in your experience with these tires?

Solid_Sim · 07-20-2018, 08:00 AM

Quote:

Originally Posted by Stephen12ZL1

turn all nannies off and don't use PTM or launch control. Hold down the traction control button for 5-7 seconds until both stabilitrak and TC lights illuminate. Do a standard burnout and brake torque to 1100 rpm and go. The torque management is terrible in 1st and 2nd gear so the best 60' you will manage should be 1.69-1.74. Leave the gear selector in "D" and don't use the paddles. On the settings screen, default the exhaust to Track and suspension to "tour". Place the console button in sport to utilize the performance shift mode. Have fun!

Great thanks for the clear instructions!!

I guess you managed your 11.08@126.52 1.76 with these settings?

Stephen12ZL1 · 07-20-2018, 05:40 PM

Quote:

Originally Posted by Solid_Sim

Great thanks for the clear instructions!!

I guess you managed your 11.08@126.52 1.76 with these settings?

Yes, and the run I managed a 1.72 60' could have been a 10.99 or 11.00 if I hadn't tried the paddle experiment.

Solid_Sim · 07-30-2018, 06:04 PM

Managed a 11.3@126 mph, 1.73 60 ft

Pretty happy with the results! Considering we had temps. around 86+ and a 15-20mph headwind!

Thanks for the tips! Worked out very well... With a Roto Fab cai and a ported TB I think the 10.9 is easily feasible.

P.S I'm trying to link my timeslip in the post but can't idk how to link my pic via a URL

Dnorris1369 · 07-30-2018, 06:18 PM

What tires u running I’m debating on my next tires

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Dnorris1369 · 07-30-2018, 06:19 PM

Oh yes. Congrats on good run

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Snakebt6 · 07-30-2018, 08:40 PM

Nice!

Flexhorn · 07-30-2018, 08:56 PM

I haven’t taken my tire pressure down. Would that be the big difference in my 60’ being so bad? I’ve been hitting a 2.19 60’ and a 12.5 1/4 at 121mph

Solid_Sim · 07-31-2018, 10:17 AM

Quote:

Originally Posted by Dnorris1369

What tires u running I’m debating on my next tires

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M/T ET Street R 305/45/17 on Racestar wheels from Phastek.

20 psi

07-19-2018, 06:47 PM	#1
Solid_Sim Drives: 2018 Red hot A10 ZL1 Join Date: Apr 2017 Location: Québec Posts: 74	Best dragstrip prep and launching A10 with DR's Hey guys, With my break-in almost finished, the time to test my ZL1 on the 1/4 mile is coming in fast and I've been searching and reading all the forums, I can't seem to find the perfect way to launch my A10 ZL1 if I'll be on M/T ET Street R 305/45/17 on a sea-level track. Track is slippery tough, but I'm confident I'll get 1.7 60' if I manage to launch right. But... with or without launch control? What settings? (% slip, RPM etc) Or people seem to get better results without LC (track mode all nanies off?) but would I launch from idle with the DR's or from 1500 or more RPM? What PSI do you recommend I put the tires also? Thanks for your help! __________________ 2018 Red hot A10 ZL1 with black center stripe and Nav. Stock for now! (SOLD) 2017 Red hot 2SS, M6, NPP, MRC, GM ground effects, ACS Composite decklid spoiler, Mishimoto Catch can, Diablosport i2030 with custom tune, Primary cat delete pipes by CA Performance, Roto-Fab CAI

07-19-2018, 09:39 PM	#5
Stephen12ZL1 Drives: '21 ZLE A10 Join Date: May 2012 Location: Mechanicsville, VA Posts: 6,808	turn all nannies off and don't use PTM or launch control. Hold down the traction control button for 5-7 seconds until both stabilitrak and TC lights illuminate. Do a standard burnout and brake torque to 1100 rpm and go. The torque management is terrible in 1st and 2nd gear so the best 60' you will manage should be 1.69-1.74. Leave the gear selector in "D" and don't use the paddles. On the settings screen, default the exhaust to Track and suspension to "tour". Place the console button in sport to utilize the performance shift mode. Have fun! __________________ '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)

07-30-2018, 06:04 PM	#9
Solid_Sim Drives: 2018 Red hot A10 ZL1 Join Date: Apr 2017 Location: Québec Posts: 74	Managed a 11.3@126 mph, 1.73 60 ft Pretty happy with the results! Considering we had temps. around 86+ and a 15-20mph headwind! Thanks for the tips! Worked out very well... With a Roto Fab cai and a ported TB I think the 10.9 is easily feasible. P.S I'm trying to link my timeslip in the post but can't idk how to link my pic via a URL __________________ 2018 Red hot A10 ZL1 with black center stripe and Nav. Stock for now! (SOLD) 2017 Red hot 2SS, M6, NPP, MRC, GM ground effects, ACS Composite decklid spoiler, Mishimoto Catch can, Diablosport i2030 with custom tune, Primary cat delete pipes by CA Performance, Roto-Fab CAI

07-19-2018, 06:52 PM	#2
7WSM Drives: 2017 ZL1 A10 Join Date: Nov 2009 Location: Pearland, TX Posts: 465	I have those exact tires and with a good burnout, it will hook with just about any launch RPM, any mode including everything off. On my stock car, it sixties around 1.77-1.70.

07-19-2018, 09:05 PM	#4
7WSM Drives: 2017 ZL1 A10 Join Date: Nov 2009 Location: Pearland, TX Posts: 465	Only have ran them so far in 90+ degree temps, but have been 11.30s @121 MPH. This is with and without any launch control. Only was able to get a little faster times if I let the car cool down for a hour or so. If I hot lap it, it will run in the 11.40s-11.50s in the Summer. I usually start at 20-22PSI of air. Usually I drive to the track with the radials already on and use these https://www.amazon.com/dp/B00QBPBLWY..._t2_B075ZBMVF4 to deflate them. I have them set to 20PSI. It's a little trick I learned going off road. I also use these while I am in the staging lanes as well since I don't run TPM sensors on my Weld setup. https://www.amazon.com/dp/B01J580F2K...&pd_rd_w=vAgNG

07-30-2018, 06:18 PM	#10
Dnorris1369 Drives: 2018 ss Join Date: Jan 2018 Location: Four Oaks Posts: 56	What tires u running I’m debating on my next tires Sent from my iPhone using Tapatalk

07-30-2018, 06:19 PM	#11
Dnorris1369 Drives: 2018 ss Join Date: Jan 2018 Location: Four Oaks Posts: 56	Oh yes. Congrats on good run Sent from my iPhone using Tapatalk

07-30-2018, 08:40 PM	#12
Snakebt6 Drives: Rally Green 2020 ZL1 1LE A10 Join Date: Jul 2018 Location: Jacksonville Florida Posts: 402	Nice!

07-30-2018, 08:56 PM	#13
Flexhorn Drives: A10 ZL1 Join Date: Mar 2018 Location: Longview, Texas Posts: 142	I haven’t taken my tire pressure down. Would that be the big difference in my 60’ being so bad? I’ve been hitting a 2.19 60’ and a 12.5 1/4 at 121mph

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