Convertible Top Speed? - Page 3

ArmanSS · 06-24-2019, 08:43 PM

Quote:

Originally Posted by bignaz

Yeah I mean 155+ even a coupe your odds of survival are pretty low. On a vert your dead. The loss of structure seals that fate. I mean not much better chance in a coupe but you might live after being cut out. Your quality of life will be pretty bad but slightly better chance then a vert.

I'd rather just be dead than be a vegetable

pyroguy · 06-25-2019, 06:26 AM

OP, to answer your question, it's a safety thing. However, one of the first things tuners turn off when they get a hold of your car is the governor. All 5th gen SS cars had a governor of 150 or 155 yet there's plenty of people who have surpassed that. Mine is turned off because my car is tuned. However, I haven't been that fast and highly doubt I ever will be, but it's there if I want it I guess.

KelownaCamaro · 06-25-2019, 10:38 AM

For some reason I remember reading but can't find that the top speed of the coupe was 330km/h and that the convertible was 308km/h. I can't find the information now but I do know that I've had my convertible at 250km/h which is slightly more than 155 mph, and it has never been tuned.

ArmanSS · 06-25-2019, 11:00 AM

Quote:

Originally Posted by pyroguy

OP, to answer your question, it's a safety thing. However, one of the first things tuners turn off when they get a hold of your car is the governor. All 5th gen SS cars had a governor of 150 or 155 yet there's plenty of people who have surpassed that. Mine is turned off because my car is tuned. However, I haven't been that fast and highly doubt I ever will be, but it's there if I want it I guess.

Thank you!

Wyzz Kydd · 06-25-2019, 11:42 AM

Maybe it's a structural thing. At 150 mph and up the forces acting on that convertible top must be pretty strong. Could be the thing would be ripped off at 180 mph. That would not be fun.

c4racer · 07-01-2019, 05:43 PM

If the ZL1 convertible isn't speed limited, then it isn't a structural integrity concern.

I sure wouldn't go over 155 in mine anyway - but then again, I wouldn't do that in a coupe without a roll bar either. I did the silver state open in a C4 with a tech speed of 165, and I hit 165 and that car had additional aero mods. And it was pretty scary up above 150. We had a 6 point roll bar, full safety gear, helmets, harnesses etc. No way in a street car convertible or not.

LT4Greg · 07-01-2019, 08:38 PM

Agree c4racer! Well said!

ArmanSS · 07-09-2019, 11:18 AM

For anyone who was wondering, after three weeks of waiting, I got an official answer from chevy:

"Thank you for your patience while we researched your specific inquiry. We have discussed this inquiry with our product specialists and they have stated that the difference in the vehicle speeds is in order to assist with protection of the convertible top. Higher speeds may damage or impair the vehicles convertible top."

So if you want to go faster that 155mph in a vert and you removed the governor, put the top down haha.

ArmanSS · 07-09-2019, 11:21 AM

here is the actual email

wildchevy · 07-09-2019, 11:57 AM

The canvas top has a speed rating before it starts to unravel.

Wyzz Kydd · 07-09-2019, 12:30 PM

Quote:

Originally Posted by c4racer

If the ZL1 convertible isn't speed limited, then it isn't a structural integrity concern.

I sure wouldn't go over 155 in mine anyway - but then again, I wouldn't do that in a coupe without a roll bar either. I did the silver state open in a C4 with a tech speed of 165, and I hit 165 and that car had additional aero mods. And it was pretty scary up above 150. We had a 6 point roll bar, full safety gear, helmets, harnesses etc. No way in a street car convertible or not.

I took my twin turbo RX7 up to 165 a few times and it was more 'interesting' at that speed, maybe a medium pucker factor.

I've had my Camaro up to 150 once. It felt a bit loose until I switched to track mode (should have been there all along). Once I did that it felt pretty tight, lower pucker factor than the RX7.

ZED SLED · 07-09-2019, 02:57 PM

My 5th gen ZL1 vert was speed limited to 155 because that's what GM certified the top for. That said, the 5th gen speed record for the Texas mile and/or Arkansas Mile was set by a 2011 SS vert at around 226 mph. Not sure about top differences for the 6th gen, but the post above kind of confirms the reasoning same as 5th gen top.

c4racer · 07-10-2019, 10:35 AM

that GM position on the speed limit makes no sense if the ZL1 convertible doesn't have a limit. It uses the same top!

ArmanSS · 07-10-2019, 11:23 AM

Quote:

Originally Posted by c4racer

that GM position on the speed limit makes no sense if the ZL1 convertible doesn't have a limit. It uses the same top!

The ZL1 vert is limited. I was wrong. I looked back at the catalog and when it says ZL1 TOP SPEED, it says 198mph (coupe). I overlooked that in parenthesis it said coupe. It's funny that they didn't put the vert top speed on there, even though we know its 155 because there are videos on youtube showing that. Maybe they're embarrassed haha

06-25-2019, 06:26 AM	#30
pyroguy Started#gottalovethatblue Drives: ABM #831 Join Date: Apr 2013 Location: TN Posts: 6,917 View My Garage	OP, to answer your question, it's a safety thing. However, one of the first things tuners turn off when they get a hold of your car is the governor. All 5th gen SS cars had a governor of 150 or 155 yet there's plenty of people who have surpassed that. Mine is turned off because my car is tuned. However, I haven't been that fast and highly doubt I ever will be, but it's there if I want it I guess. __________________ '10 Camaro 2SS/RS \| Aqua Blue #831 of 3,903 \| Silver Stripes Check out my build thread

07-01-2019, 08:38 PM	#35
LT4Greg Drives: 2017 Camaro ZL1 Coupe Join Date: May 2016 Location: Georgia Posts: 5,813	Agree c4racer! Well said! __________________ ZL1 Coupe, PDR, Exposed carbon fiber hood insert, My Link with Nav, M6 6 speed and Silver Ice Metallic. Mods done: ceramic window tint, GM Accessories Camaro floor mats and Roto-Fab CAI.

07-09-2019, 11:21 AM	#37
ArmanSS Drives: '18 Camaro 2SS VERT Join Date: Jun 2019 Location: Jacksonville, FL Posts: 121	here is the actual email Attached Images

07-09-2019, 11:57 AM	#38
wildchevy Drives: 2018 Hyper Blue 2SS convertible Join Date: Aug 2017 Location: S.E.Wisconsin Posts: 182	The canvas top has a speed rating before it starts to unravel. __________________ 2018 HBM 2SS CONVERTIBLE A8

07-09-2019, 02:57 PM	#40
ZED SLED Drives: 2017 Mosaic Bk ZL1 M6 Join Date: Jul 2009 Location: South of Raleigh, NC Posts: 9,477 View My Garage	My 5th gen ZL1 vert was speed limited to 155 because that's what GM certified the top for. That said, the 5th gen speed record for the Texas mile and/or Arkansas Mile was set by a 2011 SS vert at around 226 mph. Not sure about top differences for the 6th gen, but the post above kind of confirms the reasoning same as 5th gen top. __________________

06-25-2019, 10:38 AM	#31
KelownaCamaro Drives: 2017 2SS Hyper Blue Kalahari Join Date: Aug 2016 Location: Kelowna Posts: 29	For some reason I remember reading but can't find that the top speed of the coupe was 330km/h and that the convertible was 308km/h. I can't find the information now but I do know that I've had my convertible at 250km/h which is slightly more than 155 mph, and it has never been tuned.

06-25-2019, 11:42 AM	#33
Wyzz Kydd Banned Drives: 2018 Camaro SS1 1LE Join Date: Feb 2017 Location: Georgia Posts: 1,595	Maybe it's a structural thing. At 150 mph and up the forces acting on that convertible top must be pretty strong. Could be the thing would be ripped off at 180 mph. That would not be fun.

07-01-2019, 05:43 PM	#34
c4racer Drives: 2016 SS Convertible Join Date: Sep 2016 Location: California Posts: 1,108	If the ZL1 convertible isn't speed limited, then it isn't a structural integrity concern. I sure wouldn't go over 155 in mine anyway - but then again, I wouldn't do that in a coupe without a roll bar either. I did the silver state open in a C4 with a tech speed of 165, and I hit 165 and that car had additional aero mods. And it was pretty scary up above 150. We had a 6 point roll bar, full safety gear, helmets, harnesses etc. No way in a street car convertible or not.

07-09-2019, 11:18 AM	#36
ArmanSS Drives: '18 Camaro 2SS VERT Join Date: Jun 2019 Location: Jacksonville, FL Posts: 121	For anyone who was wondering, after three weeks of waiting, I got an official answer from chevy: "Thank you for your patience while we researched your specific inquiry. We have discussed this inquiry with our product specialists and they have stated that the difference in the vehicle speeds is in order to assist with protection of the convertible top. Higher speeds may damage or impair the vehicles convertible top." So if you want to go faster that 155mph in a vert and you removed the governor, put the top down haha.

07-10-2019, 10:35 AM	#41
c4racer Drives: 2016 SS Convertible Join Date: Sep 2016 Location: California Posts: 1,108	that GM position on the speed limit makes no sense if the ZL1 convertible doesn't have a limit. It uses the same top!

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