revlimiter/transmission question

[yellerstang]

I have a 2000 GT automatic convertible. All stock, except for a Flowmaster cat back system.

Here is my question... When I manually shift this at about 5400-5500, the shift sometimes delays long enough to hit the revlimiter, which looks like around 6050 or so. I have only run this car a few times, so I am still learning how it acts when manually shifting vs. automatically shifting. Obviously, its more fun to manually shift it.

Is there a way to set this up so it will want to shift just slightly earlier, or, would I be better off to get it tuned to bump up the revlimiter rpm a little?

Should I just shift it at 5200 and let it do its own thing?

Does anyone know what the stock shift points are in this car at full throttle?

I dont have a programmer yet, but will be buying one in the spring. Thanks.

 

[Everett]

rev limiter is 6250 and leave it there....ford knew what they were doing when they built the motor

 

[Maxpowers]

Leave it in drive, or get a stick car.

 

[yellerstang]

info

I called CJ Pony in Harrisburg, Pennsylvania and spoke with one of their guys about this issue.

Apparently the shift points are adjustable with the hand held tuners, like the SCT. You can move the shift points up or down on the rpm band. Soooooo..... I can move the shift point a little bit lower and keep the rev limiter at the stock setting. Also, I can firm up the shifting a little bit, the SCT allows that also, along with the other little changes that the SCT allows.

I'd say that I need a tuner, right after the 4.10s go in.

Thanks for the replies, much appreciated.

Jess

 

[yellerstang]

revs

rev limiter is 6250 and leave it there....ford knew what they were doing when they built the motor

Yep, sounds like good advice. Thanks.

 

[merc123]

I wouldn't recommend 4.10's with an auto. Too much gear.

 

[yellerstang]

410s

I wouldn't recommend 4.10's with an auto. Too much gear.

I am new to Mustangs. I had an IROC for 17 years. So, I am now faced with a learning curve, I am trying to figure out what I want to do to this car and how it will perform it's duties as a cruiser. I am not a racer. Stoplight fun once in awhile, but I have never drag raced at the track.

My Mustang comes out in good weather, top down, music jammin, and me and my wife grinning from ear to ear. Its fun.

I have read over and over that 4.10 gears are the way to go with an automatic. I have had a few well known Mustang tuner guys tell me the same thing, however, I need to live with the gears not as a racer, but as a cruiser.

I want performance, neck snapping tire squealing second gear rubber on the road. I really dont much care about gas mileage. I get 22-23 now, when I am cruising at 65-75 on the interstates. If it drops to 18-20, I dont care.

With my 3.27 stock gears, the tach reads about 2000 rpm at 68 mph. I dont know just how much the 4.10s will change this. My next search is for someone who has the 4.10s, maybe they can enlighten me on this.

It is not uncommon for us to hop in the car and take a 3 hour cruise, so I have to be sure that the gears are what I want. I will have to live with it.

Thanks for your comment, I am looking into the gears and havent decided.

Jess

 

[merc123]

About 2500 with 4.10's

Here's a calculator and gear ratios:
Ford Mustang: Mustang Tech: Calculators & Decoders: RPM Calculator
2000 Ford Mustang Specifications

I made a mistake. I was thinking blower setup with the 4.10's. Get the 4.30's with the auto because then it'll be the same as a 4.10 with manual tranny

 

[Flghtmstr1]

For what it's worth, I have 3.73s in my automatic, and I liked them when I was naturally aspirated, especially on long highway drives. I think the 4.10s would have been excessive for highway use. With a blower, even the 3.73s are too much, and I'll probably have to step back to 3.55s or even the stock 3.27s.

 

[yellerstang]

373

For what it's worth, I have 3.73s in my automatic, and I liked them when I was naturally aspirated, especially on long highway drives. I think the 4.10s would have been excessive for highway use. With a blower, even the 3.73s are too much, and I'll probably have to step back to 3.55s or even the stock 3.27s.

The 3:73 gears arent really much deeper than the 3:27 ratio. Was that a worthwhile expense?

I havent decided yet, I am hoping to drive or ride in someones Mustang that has the gears... see first hand whats up with rpm, noise, and performance.

Its gonna be 3:90s or 4:10s, I havent decided yet. I have some time to decide on this, Im not doing a gear change until Feb. or March.

 

[Flghtmstr1]

The 3:73 gears arent really much deeper than the 3:27 ratio. Was that a worthwhile expense?

I havent decided yet, I am hoping to drive or ride in someones Mustang that has the gears... see first hand whats up with rpm, noise, and performance.

Its gonna be 3:90s or 4:10s, I havent decided yet. I have some time to decide on this, Im not doing a gear change until Feb. or March.

I got the gears for free, so I can't comment on how worthwhile it was lol. I noticed a difference, but I would imagine 4:10s would be better in that regard. You have to understand that it's going to be a compromise, and if you intend to spend a lot of time at highway speeds, 4:10s may be too much, but you'll be leaving some performance on the table if you go with 3.73s. It's all about your priorities and goals for the car.