147 Mph????

[Ridenour]

My friend says that his friend maxed out his 2003 Grand Am GT at 147 MPH! He says he had the govenor removed but no other modifications to the engine. I find this hard to believe. Can anyone else testify that it's possible to go that fast in an all-stock 2003 GT? I dunno, but I don't believe a stock would max out that high. Don't think it'd do it. Tell me if it's possible.

[nighttraincp]

i got an 04 se and my governer kicks in at 107, third gear at 4500 rpms. i think it might be possible

[GASE 95]

yeah im thinking it could be possible too since he removed the governor and it is a GT...who knows, maybe he was going downhill or possibly even in a freefall. heh heh

[Slade901]

He needs to be careful as the governor is there to prevent speeding beyond the governor setting because stock tires are not rated for high speed.
If they want to go beyond that speed and disable the governor, they must use a high speed rated tire.

[GASE 95]

good point..i wasnt even thinking of that

[Ridenour]

Hahaha... yeh he probably was on a 45 degree slope or somethin. Jeez, I didn't even think about non-highspeed rated tires. That kid better watch it or he's gonna lose a tire goin that fast... he'd roll so much there wouldn't be anything left for the medics by the time he stopped. Speaking of speed rated tires.... - what would be some good, inexpensive high-speed tires?

[achievasc92]

I don't think he hit anywhere near 147, I'd imagine a big old boat like a 5th gen. GA would be drag limited at around 120-125ish.

[gm-andy]

Cars today have speed limiters built into the computer. When you reach your maximum speed, no more fuel will be injected into the engine no matter what you do. I doubt its set at 145mph.....Its a federal law.

[CarSuperfreak]

while i think that it is theoritically possible, how could he tell? his speedo doesnt go that high (i dont think) but i know ive had my car over 120 (95 bonneville ssei) so i wouldnt necessarily doubt that it could, but id want some proof.

[GASE 95]

proof?..the only proof i would want is to stand by with a radar gun cuz there isnt any way id get into a car with a "nonprofessional" driver trying to go anywhere near 145...unless of course that nonprofessional driver is me

[BFT]

140+ in an N/A Grand AM? The biggest engine they pack is a 3.4, and its no way he could even do that if he had the 3.8 unless he's supercharged.

[achievasc92]

The engine doesn't really matter, its the gearing, governer and what speed the car is drag limited to that matters.

[Markgase2000]

Im not sure the top speed of the ga's , but i guess its around 155 without a speed limiter. Got a 247kmph (154mph)ticket that caused me grief in the longrun with my 2000 se v6. It was near yellow in fourth. (automatic) give a good idea?

[matt919]

ive gotten my '93 SE at 120+ .. so i would think its possible

[gagt1]

I also have no gov. on my 1999 gagt and i have hit 140 at about 5500RPM. I have the sport performance package on my car also so the spedometer shows up to 150mph.