I believe f-bodies ordered with z-rated tires also have a speed limiter. Its just at 158mph, not at 115mph.

somebody correct me if i'm wrong.

 

I know of many brand new F-bodies here, purchased in Canada, that do not have speed govenors. However, they were also ordered with the z-rated tire package.

It makes perfect sense.

 

I have had my 94 Z speedo pegged MANY times. I am sure I was getting around the 158 mark, but never felt a governer with the stock PCM. It didn't have enough power after 145 to gain very fast though. If there was a governer there I don't think the car could have got there anyway. Maybe someone with the 2.72 gears could though.

She's set up for 1/8th mile racing now so no more of those high speed runs

 

If there IS one on 'all cars' it's higher than 160-65 for sure..

 

162 or 163mph was the factory limiter on my friends 99 Anniversary T/A, which I think is what most if not all 94-02 cars got with Z-rated tires.
My old 96 V6 Camaro had the 115-119mph limiter since that was about 3K in 4th gear and the car still had more power.

All LT1/LS1 cars have limiters, all you do is raise it to the max.
Here is Tunercat, setup for my TPI I had at the time, but the LT1 version looks the same,
Fuel Cut Off Speed is the name of the limiter.
http://www.transamws6.com/pics/transam/cats.jpg

 

This post completely answered my post. Thanks guys. Whats the better programmer to get? LT1_Edit, or the tuiner catz or whatever? Thanks guys. Noah

 

Depends on what year your ECM is.
Tunercat is for OBD1, 94-95 and costs $89. LT1 Edit comes in 2 versions, one for OBD1 and one for OBD2. OBD1 is $200 for the expert Version and OBD2 is $550 for the expert version.
Custom Cable is $95.