I'm not sure how our GTO's rev limiter works but I think it is a matter of cutting spark to a few cylinders to keep the engine from over doing it. In the case of a speed limiter I would think it would be the same, so if your speed limiter was set at 120mph, then the engine would start its power reducing to make sure you go no faster. I am sure it is not the brakes keeping us at speed, so it has to be engine management.
There is a formula that is a basic rule of drag on an object. Drag force is a function of velocity squared, meaning that the drag force on a car doing 200 mph is 4 times that of the same car doing 100 mph. I think your car, being an automatic, has reached its max speed because of all the slippages and not having the lock that a manual gearbox has, which will allow it to reach a lilttle higher speed if all else is equal.
I think the passenger makes the car take longer to get to the top speed and you have to take wind and air temp into account for a small variation on your top speed. If you could manually shift your automatic, maybe you could keep the car a llittle higher in the rpm range before you shift and before you drop out of the power range. It looked like you had almost another thousand rpms to go before redline when it shifted in your video for the last time.
Let us know how fast it goes with the additions you are talking about. Hope you have good speed rated tires by the way. I have had mine up to 155 mph, completely stock and before any kind of tune up and program tune. That was in 5th gear, but was running out of room.
2004 LS1, T56, Dynojet pulled 407 rwhp. and 386rwtq. He still had more in him. But like I said, 170mph on GPS or if you want to go with the 174mph Digital speedometer, is plenty for a stock suspension.
2004 LS1, T56, Dynojet pulled 407 rwhp. and 386rwtq. He still had more in him. But like I said, 170mph on GPS or if you want to go with the 174mph Digital speedometer, is plenty for a stock suspension.
If you are referring to your car...the proper pronouns to use would be "she" and "her". She still had more in her. Sorry, it just bothered me.
Great numbers though! Especially since you got the weaker LS1
If you are referring to your car...the proper pronouns to use would be "she" and "her". She still had more in her. Sorry, it just bothered me.
Great numbers though! Especially since you got the weaker LS1
He's got 47 more rwhp than you Eric so that statement isn't true. Well, not true in this case. With your 360 rwhp you shouldn't have a problem hitting 170. Some have claimed to hit 170 stock.
I didnt read all the posts so sorry if this was mentioned but the GTO limiter is factory set at 160mph, the stock LS2 engine is rated for a top speed of 186 mph though. There are ways around the limiter but without proper engine mods I would leave the limiter. Also the reading is off due to many factors at excess speeds, a clear reading at over 150 is pretty tricky. GPS or a speed gun are the only true tested ways to get a proper speed. Also tire sizes and tread wear are the biggest factors with misreads.
I didnt read all the posts so sorry if this was mentioned but the GTO limiter is factory set at 160mph, the stock LS2 engine is rated for a top speed of 186 mph though. There are ways around the limiter but without proper engine mods I would leave the limiter. Also the reading is off due to many factors at excess speeds, a clear reading at over 150 is pretty tricky. GPS or a speed gun are the only true tested ways to get a proper speed. Also tire sizes and tread wear are the biggest factors with misreads.
I think the limiter is set at 155mph. I saw mine through HPTuners during my first tune and it was set to 155mph. I would think that they all are set the same but who knows. Like you said, tire size and wear needs to be taken into consideration.
The GTO is a "he". NOT a girl... come on man.. Goat / The great one / The humbler / The Tiger.... If you want a car that you can call a girl, get a mustang.
But you are right, stock for a LS2 can hit 170mph, or maybe even faster. My little brother has a stock '06 LS2 and he told me that he has hit 173mph.
The GTO is a "he". NOT a girl... come on man.. Goat / The great one / The humbler / The Tiger....If you want a car that you can call a girl, get a mustang.
But you are right, stock for a LS2 can hit 170mph, or maybe even faster. My little brother has a stock '06 LS2 and he told me that he has hit 173mph.
Now that's funny. Cold but funny.
Quote:
But you are right, stock for a LS2 can hit 170mph, or maybe even faster. My little brother has a stock '06 LS2 and he told me that he has hit 173mph.
I read in a magazine that the '05-'06 GTO should run 175 without the limiter. Man I wish we had an isolated paved area where I can run that speed. I'd love to hit El Mirage which is only about 10 miles from me but damn I don't want to deal with all the dirt.
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