Camaro936

Ok i got a 96 camaro z28 T tops auto and i wanted to see what this car got but it wouldnt pass like 120 125 do this cars have some kind of governer? i mean i didnt give it full throttle i just give enough thottle to speed up.

kornboy810

Sounds like the guy who bought it new didnt want to pay for the Z speedrated tires!! That cheap bastard!

brucer

computer has a speed limiter built into it.

moparman

If the car was sold new without Z rated tires, then it has a speed limiter programmed into it. The speed limiter can be eliminated by someone who has the proper equipment to reprogram the PCM.

Injuneer

Also has a speed limiter if it has the Z-rated tires...... but its set to 255 MPH.

You can check for Z-rated tires by looking at the build code tag for RPO "QLC". The actual limit set for the standard tires varied over the year, from 109-118MPH.

What was preventing it from going faster? Did the engine suddenly cut out like it lost spark? What gear was it in? Why didn't you go full throttle? Maybe you just needed to put your foot on the floor.

Camaro936

i had it half throttle and yea it felt like fuel cut. where do i check this tag? sounded like a launch control

Injuneer

Usually the build code tag is in the glove box. You should also have a tag on the door jamb, telling you what tires were on the car when it left the factory.

PWR SHFT

If the car was not equiped with z-rated tires, shouldn't it have the 115 MPH (or something like that) speedometer?

SilverZmachine

Isn't the QFZ RPO code Z rated as well?

Injuneer

Yes.... that was the Z-rated all-season option offered starting in 95.

SilverZmachine

Will the QFZ code car get up to 150mph?

97SS0594

non Zrated tires car have the same cluster as a 6cyl camaro, and have a speed limiter of 120. Z rated cars have a speed limiter factory of 160. but with a LT1 tuner you can max it out to 255, but without touching it the speedlimiter is 160, but sounds like the original owner of your car was a cheap *** and didnt get the Z rated tires

SilverZmachine

My car has the QFZ code. Is it just an all season tire? Or will mine go up to 150-160mph? It seems everytime I get on the highway there's either too many cops or too much traffic! Damn Chicago!


I also have a Hypertech Power Programmer III that the previous owner gave to me with the car.

Camaro936

mine has the 150 cluster. it wont go past 120

SilverZmachine

Do you have the QLC or QFZ code?