Yikes... Would have thought 190. - Page 2

BlaqWhole · 10-01-2019, 12:31 PM

You guys are forgetting a few things.

Remember, the ZL1's "official" top speed is listed at 198 MPH. The way they got that was by racing it down the track in one direction to a top speed, then going the opposite direction to a top speed, and then averaging those two numbers. So it did 202 going one way and then 194 going the opposite way. Therefore the "official" top speed is 198. Given the difference in just going a different way along with weather conditions, wind, weight, variances between different ZL1s and other minut things, it could be argued that the top speed of the ZL1 is anywhere between 190 and 205. In my estimation that is. Why? Because very little things can scrub off or add on a MPH or two once you are going that fast. Even something as little as an inconsistency in the body panels can cost speed.

The ZLE is supposed to do 190 top speed. Again that could vary by a lot. In this test they only ran it in one direction. Simply going the opposite way could have seen an 8 - 15 MPH gain. Driver weight, engine and tune variances, suspension settings, tire wear, etc can all account for more speed or less speed. So that 178 could very well have been 185+ simply from going the opposite way. And at that speed I would say a 5 MPH loss is more or less due to little things having an impact at higher speeds.

So I think 176 is right on the money all things considered. Just because a ZL1 has a specific top speed at one track on one day with a certain driver in certain conditions doesn't mean that every ZL1 with every driver will always hit that same speed all the time on every track in every condition any day of the week. Given the difference of 8 MPH between the 194 and 202 that the ZL1 did for GM, it stands that this ZLE could have done 184 (176 + 8). Of course things don't always work that way but it can be debated that there was more speed to be had just from going the opposite way.

Homeless Junkie · 10-01-2019, 01:30 PM

The ZL1 1LE is the only car I've ever driven where the faster you drive the more stable the car feels.

wnta1ss · 10-02-2019, 06:08 AM

Quote:

Originally Posted by collinms

Looks like the aero drag is significant.

Yes, it seems that the ZLE has those open ducts on the front with the canards, that big wing, and wider tires than the normal ZL1. So the mods to increase cornering speed compromise it's straight line speed. I would like to see a normal ZL1 with the A10 run that 2.7 miles, am thinking that model should go 190+, based on the fact that owners are getting mid-170s in 1.0 mile with them.

unavailablezl1 · 10-02-2019, 08:10 AM

This top speed info is old news. It was common knowledge as far as I know.

SWZL11LE · 10-02-2019, 09:05 AM

Quote:

Originally Posted by viurniel

Interesting, I hit 180 on a local road running with bikes, and I wasn't really going for top speed - just trying to keep up with the bikes. After 160 the Aero can be felt in your soul.

180 indicated on the dash, or GPS speed? The indicated speed on the dash isn't as accurate as one might think.

TheRedhead · 10-02-2019, 02:22 PM

+1 to this car being the animal where the faster you go, the better it feels.

viurniel · 10-02-2019, 02:51 PM

Quote:

Originally Posted by SWZL11LE

180 indicated on the dash, or GPS speed? The indicated speed on the dash isn't as accurate as one might think.

Good point. I was only referencing the dash.

drfeelgood · 10-02-2019, 09:44 PM

I read and watched a lot of the initial videos about the ZL1 and the 1LE, and a couple of the reviews mentioned that the aero reduced the top speed on the 1LE. Considering that 90+% of people can't take advantage of everything this car offers and most will never have the open road to safely hit 190mph anyway, I would say this is a moot point. The 1LE is a bad ass car, at 170, 175, 180, or wharever .

Solaris · 10-03-2019, 10:42 AM

I believe the A10 used to set the 7:29.6 at the Nurburgring was a 2017 and it read and indicated speed of over 180 mph on the end straight. Will have to watch the vid again to be sure (dammit!).

Hold please (off to do the research....)

ETA: Yup, 181 mph. Only hit 181 for the briefest of seconds, but it did read 181. Hauling Ze Mail!

I have always wanted a car that will do over 200 in hopes that I would get a chance to go over 200 one day. I think with a little prep, the ZL1 will do it. I just need the space. And Time....

viurniel · 10-03-2019, 12:22 PM

Quote:

Originally Posted by Solaris

I believe the A10 used to set the 7:29.6 at the Nurburgring was a 2017 and it read and indicated speed of over 180 mph on the end straight. Will have to watch the vid again to be sure (dammit!).

Hold please (off to do the research....)

ETA: Yup, 181 mph. Only hit 181 for the briefest of seconds, but it did read 181. Hauling Ze Mail!

I have always wanted a car that will do over 200 in hopes that I would get a chance to go over 200 one day. I think with a little prep, the ZL1 will do it. I just need the space. And Time....

The non-1LE ZL1 should be able to do it in the right conditions and with a little prep work.

Coat-This · 10-04-2019, 09:54 PM

Quote:

Originally Posted by collinms

https://youtu.be/Zmcw18Iz9Jg

Looks like the aero drag is significant.

Not necessarily. Most of the MPH loss is coming from the shorter 6th gear......

wnta1ss · 10-05-2019, 05:28 AM

Quote:

Originally Posted by Coat-This

Not necessarily. Most of the MPH loss is coming from the shorter 6th gear......

Wrong, the shorter 6th gear is actually a positive change. The normal ZL1 falls on it's face going from 5-6 at speed with the M6, have seen it in videos of them. Whereas the ZLE with it's shorter 6th gear ratio actually continues to accelerate in 6th. Taller gearing does not necessarily mean faster, because gearing needs to be matched to the drag, power, and power curve.

Coat-This · 10-05-2019, 03:14 PM

Quote:

Originally Posted by wnta1ss

Wrong, the shorter 6th gear is actually a positive change. The normal ZL1 falls on it's face going from 5-6 at speed with the M6, have seen it in videos of them. Whereas the ZLE with it's shorter 6th gear ratio actually continues to accelerate in 6th. Taller gearing does not necessarily mean faster, because gearing needs to be matched to the drag, power, and power curve.

Be that as it may, its a math problem genius. The car can only go as fast as HP, RPM and gearing allows. The 6th gear in the 1LE is a natural progression from 5th so that its ACTUALLY USABLE on a track. Whereas 6th gear in the ZL1 is more of an OD.

Further, ANY 650hp ZL1 will pull 6th gear anywhere. Especially with nearly 3 miles of track. I have no idea what hooptie you're rolling in that "falls on its face" in 6th. I'm in 6th gear rolling down the highway anything near 70ish. I wish there was a 7th gear.

2017-ZL1 · 10-05-2019, 03:36 PM

Quote:

Originally Posted by Scottyz

I would have thought considerably more. But... really there is a lot more rolling resistance to overcome with the aero and the wider tires. After all the fronts are the same size as the rears on a regular ZL1 but I’m a little disappointed.

Front and Rears on the Regular ZL1 are not the same. Just saying.

10-01-2019, 01:30 PM	#16
Homeless Junkie Drives: around in circles few days a month Join Date: Mar 2019 Location: San Francisco Posts: 154	The ZL1 1LE is the only car I've ever driven where the faster you drive the more stable the car feels. __________________ Avatar photo credit: Dito Milian at gotbluemilk.com

10-02-2019, 08:10 AM	#18
unavailablezl1 Drives: 2019 Silverado Z71 6.2L A10 Join Date: Mar 2017 Location: Grapevine Posts: 2,075	This top speed info is old news. It was common knowledge as far as I know. __________________ Current ride 2019 Silverado Z71 LTZ 6.2L L87 425hp A10, 4 inch BDS Lift with Fox Factory Race 2.5 Coilovers, Borla Cat back (15HP bump), BFG KM3's 33's. Past Rides 2017 M6 Camaro ZL1 Hyper Blue 2016 M6 GT350 White with blue strips 2014 M6 Mustang GT Premium Track Pack Ruby Red 2012 M6 M3 Melbourne Red Metallic

10-02-2019, 02:22 PM	#20
TheRedhead Drives: 2018 Red Hot ZL1 1LE Join Date: May 2017 Location: Tampa, FL Posts: 562	+1 to this car being the animal where the faster you go, the better it feels. __________________ 2018 RED HOT ZL1-1LE: Nav,PDR,Floor Mats Built!

10-02-2019, 09:44 PM	#22
drfeelgood Drives: 2017 ZL1 Convertible A10 Join Date: Aug 2017 Location: San Gabriel, CA Posts: 992	I read and watched a lot of the initial videos about the ZL1 and the 1LE, and a couple of the reviews mentioned that the aero reduced the top speed on the 1LE. Considering that 90+% of people can't take advantage of everything this car offers and most will never have the open road to safely hit 190mph anyway, I would say this is a moot point. The 1LE is a bad ass car, at 170, 175, 180, or wharever . __________________ '17 White ZL1 A10 Convertible - TM ported TB - RotoFab CAI - 2.3" griptech upper pulley - Kooks 1 7/8" Headers with High Flow Cats - Borla S-type Catback - Audio Overhaul - NavTV M650-GM - 20" BlackDiForza- Michelin Pilot Sport4S - Tuned at BRC Raceworks (606rwhp/675trq) '14 CTS-V Coupe - ZL1 lid - Ported TB - Ported Snout - AirRad CAI - 8.66" lower - 2.55" upper- Greenbelt - SW Headers - SW Catback - Varimax Intercooler Pump - Track Attack Intercooler-Tuned at BRC Raceworks (551rwhp/516trq) '17 Maserati Levante- STOCK

10-01-2019, 12:31 PM	#15
BlaqWhole Account Suspended Drives: 2017 Camaro ZL1 A10 Join Date: May 2012 Location: NJ Posts: 7,692	You guys are forgetting a few things. Remember, the ZL1's "official" top speed is listed at 198 MPH. The way they got that was by racing it down the track in one direction to a top speed, then going the opposite direction to a top speed, and then averaging those two numbers. So it did 202 going one way and then 194 going the opposite way. Therefore the "official" top speed is 198. Given the difference in just going a different way along with weather conditions, wind, weight, variances between different ZL1s and other minut things, it could be argued that the top speed of the ZL1 is anywhere between 190 and 205. In my estimation that is. Why? Because very little things can scrub off or add on a MPH or two once you are going that fast. Even something as little as an inconsistency in the body panels can cost speed. The ZLE is supposed to do 190 top speed. Again that could vary by a lot. In this test they only ran it in one direction. Simply going the opposite way could have seen an 8 - 15 MPH gain. Driver weight, engine and tune variances, suspension settings, tire wear, etc can all account for more speed or less speed. So that 178 could very well have been 185+ simply from going the opposite way. And at that speed I would say a 5 MPH loss is more or less due to little things having an impact at higher speeds. So I think 176 is right on the money all things considered. Just because a ZL1 has a specific top speed at one track on one day with a certain driver in certain conditions doesn't mean that every ZL1 with every driver will always hit that same speed all the time on every track in every condition any day of the week. Given the difference of 8 MPH between the 194 and 202 that the ZL1 did for GM, it stands that this ZLE could have done 184 (176 + 8). Of course things don't always work that way but it can be debated that there was more speed to be had just from going the opposite way.

10-03-2019, 10:42 AM	#23
Solaris Drives: Chevrolet ZL1 Join Date: Aug 2019 Location: Paso Robles Posts: 4	I believe the A10 used to set the 7:29.6 at the Nurburgring was a 2017 and it read and indicated speed of over 180 mph on the end straight. Will have to watch the vid again to be sure (dammit!). Hold please (off to do the research....) ETA: Yup, 181 mph. Only hit 181 for the briefest of seconds, but it did read 181. Hauling Ze Mail! I have always wanted a car that will do over 200 in hopes that I would get a chance to go over 200 one day. I think with a little prep, the ZL1 will do it. I just need the space. And Time....

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