Gentlemen's Agreement regarding HP - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

amphi · 08-03-2009, 12:53 PM

I was looking through the internet. I actually didn't know this, but German automobiles actually have a speed governor rated at around 250KM/h even though certain sections on the autobahn have no speed restriction.
My question, does anyone know what at what speed all US spec cars have to be set to by US law? Does it vary by US manufacturer? What is the top speed of a US spec Camaro (untuned)? Very curious here. Thank you.

Imfishintx · 08-03-2009, 01:16 PM

As far as I know there is no law for governing the top speed of vehicles set forth by the Goverment for vehicle manufacture's. The Camaro is limited to 155Mph from GM.

TopoSpain · 08-03-2009, 01:20 PM

Hi Amphi,

I had a 07 Mustang GT and the velocity was the speed cap at 240 Km/h (Fuel injection cut) I don't know about Camaro, but I am 100% sure I will test it too

MLL67RSSS · 08-03-2009, 01:20 PM

Most vehicles are speed governed so as not to exceed the speed limitations/speed ratings of the original equipment tires.

whitetiger777 · 08-03-2009, 01:21 PM

Quote:

Originally Posted by Imfishintx

As far as I know there is no law for governing the top speed of vehicles set forth by the Goverment for vehicle manufacture's. The Camaro is limited to 155Mph from GM.

I've heard 155 mph as well from a couple sights now.

SoloSK71 · 08-03-2009, 01:30 PM

So if we have true Z rated tires then they should not be limited ...

- SK

Imfishintx · 08-03-2009, 01:34 PM

The governed speed also has to do with the stability of the car at speed as well, just because your tires are rated for ludicrous speed the rest of the car may decide it wants to leave the roadway at mere lightspeed!!!

In other words aerodynamics play a role as well!!

Rtoups · 08-03-2009, 01:35 PM

Ok, here are the limits based on trim level:

LS: 118 MPH/190 KPH
1LT: 118MPH/190 KPH
2LT: 155MPH/249.4 KPH
1SS: 155MPH/249.4 KPH
2SS: 155MPH/249.4 KPH

This is due to original tire restrictions. The tires on the LS and 1LT are only rated to 118MPH, where as the higher trims have different tires rated to 155.

ssump29 · 08-03-2009, 01:37 PM

Quote:

Originally Posted by Imfishintx

As far as I know there is no law for governing the top speed of vehicles set forth by the Goverment for vehicle manufacture's. The Camaro is limited to 155Mph from GM.

I believe its 160 either that or my speedo is broke in my car and GTO because that were both cut out at.

TopoSpain · 08-03-2009, 01:41 PM

Really, I can't belive that a 300 HP engine only can reach 199 KPH if that speed is reached for a lot of other cars with less HP and performance.

Anyone has tested this?

MontyCarlo · 08-03-2009, 02:01 PM

Quote:

Originally Posted by TopoSpain

Really, I can't belive that a 300 HP engine only can reach 199 KPH if that speed is reached for a lot of other cars with less HP and performance.

Anyone has tested this?

It's not the 300hp engine that sets the upper limit. It's the tires.

GTengineer · 08-03-2009, 02:02 PM

Quote:

Originally Posted by TopoSpain

Really, I can't belive that a 300 HP engine only can reach 199 KPH if that speed is reached for a lot of other cars with less HP and performance.

Anyone has tested this?

READ the thread again. It is speed limited do to TIRES and possibly stability. Since the LS and 1LT both have essentially the same body (except maybe the RS) what is left out of the equation is tires.

TopoSpain · 08-03-2009, 02:20 PM

But for example, if I buy a 1LT and after I buy the wheels and tires of 2LT speed limit changes or can be changed?

Kilo-9 · 08-03-2009, 02:37 PM

Tuning software can change or remove the speed governor.

08-03-2009, 12:53 PM	#1
amphi Drives: 2SS Imperial Blue Join Date: Aug 2009 Location: Germany Posts: 31	Gentlemen's Agreement regarding HP I was looking through the internet. I actually didn't know this, but German automobiles actually have a speed governor rated at around 250KM/h even though certain sections on the autobahn have no speed restriction. My question, does anyone know what at what speed all US spec cars have to be set to by US law? Does it vary by US manufacturer? What is the top speed of a US spec Camaro (untuned)? Very curious here. Thank you.

08-03-2009, 01:35 PM	#8
Rtoups Drives: RJT 2LT Join Date: Jun 2009 Location: Palos Verdes, California Posts: 602 View My Garage	Ok, here are the limits based on trim level: LS: 118 MPH/190 KPH 1LT: 118MPH/190 KPH 2LT: 155MPH/249.4 KPH 1SS: 155MPH/249.4 KPH 2SS: 155MPH/249.4 KPH This is due to original tire restrictions. The tires on the LS and 1LT are only rated to 118MPH, where as the higher trims have different tires rated to 155. __________________ SoCal Camaro5 Family Member

08-03-2009, 02:37 PM	#14
Kilo-9 Dog Is My Copilot Drives: 2011 2SS/RS LS3 Join Date: Jun 2009 Location: Pittsburgh, PA Posts: 1,394	Tuning software can change or remove the speed governor. __________________

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08-03-2009, 01:16 PM	#2
Imfishintx Drives: 07 Tahoe LTZ Join Date: Jun 2009 Location: Melissa,Tx Posts: 80	As far as I know there is no law for governing the top speed of vehicles set forth by the Goverment for vehicle manufacture's. The Camaro is limited to 155Mph from GM.

08-03-2009, 01:20 PM	#3
TopoSpain Drives: Charger'07 SRT8 (ex 1LT 2010) Join Date: Jul 2009 Location: Madrid - Spain Posts: 105	Hi Amphi, I had a 07 Mustang GT and the velocity was the speed cap at 240 Km/h (Fuel injection cut) I don't know about Camaro, but I am 100% sure I will test it too

08-03-2009, 01:20 PM	#4
MLL67RSSS Account Suspended Drives: car Join Date: May 2008 Location: location Posts: 1,569	Most vehicles are speed governed so as not to exceed the speed limitations/speed ratings of the original equipment tires.

08-03-2009, 01:34 PM	#7
Imfishintx Drives: 07 Tahoe LTZ Join Date: Jun 2009 Location: Melissa,Tx Posts: 80	The governed speed also has to do with the stability of the car at speed as well, just because your tires are rated for ludicrous speed the rest of the car may decide it wants to leave the roadway at mere lightspeed!!! In other words aerodynamics play a role as well!!

08-03-2009, 01:41 PM	#10
TopoSpain Drives: Charger'07 SRT8 (ex 1LT 2010) Join Date: Jul 2009 Location: Madrid - Spain Posts: 105	Really, I can't belive that a 300 HP engine only can reach 199 KPH if that speed is reached for a lot of other cars with less HP and performance. Anyone has tested this?

08-03-2009, 02:20 PM	#13
TopoSpain Drives: Charger'07 SRT8 (ex 1LT 2010) Join Date: Jul 2009 Location: Madrid - Spain Posts: 105	But for example, if I buy a 1LT and after I buy the wheels and tires of 2LT speed limit changes or can be changed?