Raising the top speed

[Norm Peterson]

Originally Posted by camarokc

I am getting the 2013 2LT camaro with the RS package. I'm going to get new rims and Y-rated tires. Can I raise the limited speed on the governor? What is the actual top speed of the vehicle?

As was mentioned by Sir Nuke, your top speed (level ground assumed) is going to be power-limited to somewhere in the mid to maybe upper 140's. Right about where my 315-ish HP Mustang is expected to top out.

That last mph or two is going to be very slow to come by, slow enough that you won't feel it building or see it happen on an analog speedometer.

Your desire to step up to Y-rated tires is commendable for other reasons, though I wouldn't consider a W-rated tire to be particularly inferior in your application. Either way, put emphasis on the performance aspects of whatever tire models make it to your short list. Things like tread pattern and other appearance items are no higher than secondary considerations or "tie-breakers".

Just as a matter of general tire knowledge, tires of H or higher speed rating include what's called a "cap ply", where tires of lower speed rating do not necessarily include this feature.


There's one other thing you need to consider. It is possible for the 155-ish speed limit to be dictated by things other than tire speed ratings. I've heard where driveshafts fitted to base models elsewhere may not be reliable at the driveshaft rpms required for 140+ mph. I'm not saying that the 2LT is speed-limited for the same reason, only that it is possible.


Norm

[DRKS1D3]

When are you planning on taking this thing to the Salt Flats? That is what I presume you are doing here right? Other than that, I see no reason. Also, like others have said, your 6 will never sniff the limited top speed. Dropped from a plane and reaching terminal velocity maybe...

[MMC]

These cars don't have any front downforce and start to get light and float at speeds above 155, The ZL-1 has added downforce so they were able to raise the top speed on them but they start to get light around 200 mph as well. One of the last Hot Rod issues had a little more info on this.

[JantzenOKC]

Everyone is saying the V6 wont hit the speed limiter.. im pretty sure there are some videos on youtube of guys doing it in V6's acceleration got prettty slow at the higher speeds tho like someone said above. Not that i will be drivin that fast, Im a mechanic so i see too many blownout tires and broken balljoints and tierods thats all i think about when i get above a 100 lol

[Norm Peterson]

I hear you about suspension component failure while driving. Couple of times, I've been very fortunate that nothing worse than the one thing breaking happened. The last time I topped 100 mph was out on a road course, and I won't do that kind of speed anywhere else.

For "proving" something like this, I'd take most videos with a grain of salt.

But a slight downgrade, together with an unusually "strong" engine and perhaps a tailwind could make the difference (especially that tailwind!). You'd still have to have tranny and axle gearing that's pretty close to optimum.


Norm

[tys2010camaro]

Originally Posted by Jameg1011

This ^

But I'm curious as to why you would like to travel over 155mph anyways.

If you have to ask, you wouldn't understand! - step aside

[tys2010camaro]

Originally Posted by MMC

These cars don't have any front downforce and start to get light and float at speeds above 155, The ZL-1 has added downforce so they were able to raise the top speed on them but they start to get light around 200 mph as well. One of the last Hot Rod issues had a little more info on this.

?????????What??
I have raced my camaro in the Silver State Classic open road race from Ely to Vegas 3 times now. Last year we had another fatality caused by a blown tire at 180 MPH. All fatal crashes to date are a result of tires blowing. This is a great place to find out about tires, ratings, correct sizes, Etc.In their tire tech area. If your $400 a piece tires are over four years old, they wont pass tech.

I have no clue about the car begining to "Float" at 155. Thats just cruzing speed relazing.

[SlingShot]

Originally Posted by tys2010camaro

?????????What??
I have raced my camaro in the Silver State Classic open road race from Ely to Vegas 3 times now. Last year we had another fatality caused by a blown tire at 180 MPH. All fatal crashes to date are a result of tires blowing. This is a great place to find out about tires, ratings, correct sizes, Etc.In their tire tech area. If your $400 a piece tires are over four years old, they wont pass tech.

I have no clue about the car begining to "Float" at 155. Thats just cruzing speed relazing.

It's true, the SS is designed to create lift and not down force at speed. Only the ZL1 is designed to create down force.

[JustCraig]

Originally Posted by JantzenOKC

Everyone is saying the V6 wont hit the speed limiter.. im pretty sure there are some videos on youtube of guys doing it in V6's acceleration got prettty slow at the higher speeds tho like someone said above. Not that i will be drivin that fast, Im a mechanic so i see too many blownout tires and broken balljoints and tierods thats all i think about when i get above a 100 lol

The LS and LTs with 18's hit it at 118. Anything that came with the 19" or larger wheel package gets the 155 limiter.

[JantzenOKC]

Originally Posted by JustCraig

The LS and LTs with 18's hit it at 118. Anything that came with the 19" or larger wheel package gets the 155 limiter.

Yeah i saw two videos that showed 155 then nothing.. ill never see that but i think there capable if theres no head wind.. but 155 on the street is a good way to test out those airbags!!

[Snidely Whiplash]

Originally Posted by slick rick

Void the powertrain warranty just to increase the top speed?

A custom tune can be removed and put back in as needed if you buy the equipment/program. Make sure your ONSTAR vehicle diagnostics is expired
or your busted. I have a Garmin GPS and a cell phone. No need for ONSTAR checking on me like a spy.

[Snidely Whiplash]

Originally Posted by SlingShot

It's true, the SS is designed to create lift and not down force at speed. Only the ZL1 is designed to create down force.

Shame on you forgetting the Z28 is grounded better than the ZL1.

Lingenfelter and a host of others make bolt-ons to keep the SS planted on pavement.

[Snidely Whiplash]

Originally Posted by FaytalsCamaro

Im here in Oklahoma also. went 140 on a road to lake Texoma, long empty, straight and flat. Had the wife in the car and she was the one that gave me the go ahead since i had never opened it up fully. It was fun for the few seconds it lasted at that speed but i wanted immediately to come back down to safe speeds. Now I upgraded to a V8 and waiting for the day we go back

Come on down to the Ft Worth area and take a few laps around Texas Motor Speedway. It's MUCH more safe than a highway where a critter can walk out in the road at any time.

[Jenner]

Originally Posted by JustCraig

The LS and LTs with 18's hit it at 118. Anything that came with the 19" or larger wheel package gets the 155 limiter.

Mine topped out at 113 ??