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Old 07-13-2004, 05:24 PM   #1
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Shifting on Automatic

Got a 2004 3.9L V-6 w/ automatic. My friends tell me to manually shift gears when I race from a stop. They say to put it on 1 and go to 2 when rpm is near redline and go to D when it gets near redline again. They say it'll go faster. Is this true and how much faster? If true I've found through experimenting that it feels smoother depending on when I upshift, when should I aim to upshift for best results?
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Old 07-13-2004, 05:42 PM   #2
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its not true and its a good way to tear up your transmission. The computer can shift better than you can.

If you want to improve shifting get:

1) Shift Kit
2) Chip to improve shifts

You can do both
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Old 07-13-2004, 05:42 PM   #3
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btw this belongs in the Suspension and Drivtrain section

Dont worry about the posts being moved. Just trying to keep things organized.
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Old 07-13-2004, 05:46 PM   #4
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get a stall torque converter
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Old 07-13-2004, 05:48 PM   #5
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http://extremeeffect.com/38Shiftkit.html

Get the B&M Shift Kit. Do not get the Shift Kit plus or the Transgo
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Old 07-13-2004, 05:55 PM   #6
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High stall torque converters can be a big help if you plan to race on a drag strip a lot and you don't mind spending close to a thousand dollars to gain 1/2 a sec. Personally I have other things to spend my $1000 on. Don't drag race anyway, don't want to tear my car up.
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Old 07-13-2004, 05:57 PM   #7
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So with the B&M shift kit I will...

What changes will I notice?
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Old 07-13-2004, 06:01 PM   #8
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firmer shift pretty much
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Old 07-13-2004, 06:17 PM   #9
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As you can probably tell I'm not very familiar with cars and lingo so a firmer shift would translate to... What difference will I feel while driving?
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Old 07-13-2004, 06:21 PM   #10
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when your car shifts itll give you a nice jerk and your tires will probably chirp into the next gear at full throttle. It just makes your car shift a lot harder. From the factory ford makes it so its nice and smooth... by adding a shift kit itll make shift nice and quick.
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Old 07-13-2004, 06:37 PM   #11
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So what is the purpose for the 1 and 2. When are they to be used?
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Old 07-13-2004, 07:04 PM   #12
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Slowing you down or climbing hills
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Old 07-13-2004, 07:05 PM   #13
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its just like a first and second gear in a manual. You need to climb a hill in a 5-speed you drop it down to get a lower gear ratio which increases your rpms. You downshift in a 5 speed to slow you down.
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Old 07-13-2004, 07:15 PM   #14
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that b&m shift kit .. it says 92-95 i got a 2001 and have had no luck finding a decent shift kit . i also dont us the internet to much . that one wont work with my car im sure but any help on where i can get one?
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Old 07-13-2004, 07:25 PM   #15
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I think thats a typo.... not sure though
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Old 07-13-2004, 07:43 PM   #16
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Shifting an automatic is fine. It doesn't put any more wear on your car than flooring it in drive would. Don't listen to them.
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Old 07-14-2004, 08:56 AM   #17
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ive heard the same, that manually shifting isnt bad for a transmission. the only thing i could se being wrong for it would be to redline every gear racing or not = serious heat which would break down the clutches etc. but if you are flooring it anyways i find i can shift at better p[oints then the computer- simply because max hp is a lil before redline, i also feel the shift alot more that way which could be good or bad. but a shift kit is neccessary, if you plan on any type of quick racing. not sure if any of you have been in a lincoln ls but i am envious of their tranny's, quickest firmest shifts i have felt in a stock car.
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Old 07-14-2004, 09:45 AM   #18
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The shifting IS still computer controlled, even if you manually shift it. Try this: Hit 80 in D, then drop it into 1. What happens? Absolutely nothing. It knows there is no way it can do 80 in 1st, so it will do its best to keep you from being a ****** and breaking your car. Likewise, when you shift from 1-2 you're saying: Computer, please upshift me whenever you feel comfortable.

The only more wear it will put on your tranny is if you are bouncing it off redline before you shift. I have manually shifted my car for about a year and a half and it is perfect. I usually only manually shift it when I take a turn, because my tq converter and shift kit cause my rear end to kick out if it shifts in the middle of the turn. And flooring it in D is faster than manually shifting it in drag races.
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Old 07-14-2004, 09:57 AM   #19
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i have to disagree slightly. i think what you are mistaking for the computer shifting is actually the looseness of the stock transmission. IE- if you put it in D and floor is it will take you to just about redline before the computer shifts. if you put it in 1 and floor it you can shift at any point, you can shift1-2 at full throttle at 3k, the engine will continue to climb for a split second but the transmission has begun the shift. the computer didnt have anything to do with that except telling the transmission, he wants to shift now.

out of curiosity i have herd that running to 3rd with the OD off is quicker then with it on. any one?
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Old 07-14-2004, 09:58 AM   #20
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I think I'll just take your word for it. About the dropping it into 1 from D at 80mph.

If I feel like i need to try to go fast, which isn't a whole lot in my v6 auto, I do shift 1 2 D. Normally I keep it in D though.
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Old 07-14-2004, 09:59 AM   #21
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yeah if the tranny's computer sees that your trying to do something stupid it wont let you like what laser said if your in o/d and you drop it to first nothing will happen because the tranny knows better than to try something like that
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Old 07-14-2004, 10:06 AM   #22
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yeah with downshifting, since you can trash your transmission it doesnt let you do stupid mistakes, but you can upshift at anypoint and rpm and it will let you. i think we are saying the same thing just in different ways.. east coast-west coast two different worlds. heha
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Old 07-14-2004, 10:13 AM   #23
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accually no not when upshifting sometimes it wont let you, i have a buddy has an excursion and hes really dumb he thinks overdrive is for like hills and to take off hard so he puts overdrive when he takes off but the tranny does not go into overdrive if it did the car would ot even take off
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Old 07-14-2004, 10:21 AM   #24
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yeah but an excursion has a completely different transmission and an extra 2000 #'s, you can start a mustang in second gear. its slow but itll do it .. an excursion is totally different. and once you hit D with or with out the overdrive on you are back to an automatic, in D the computer takes over. if you run a car through 1-2-D and then slow down itll down shift on its own and run through the gears. if the OD is off itll only go to 3rd, if its on itll shift to 4th. 1st and second gears hae complete control you can drive in 2 for the next 100,000 miles and itll never leave second gear till you blow up the motor on the higway. but D is computer driven. OD is fourth and wether or not its on or off decideds wether the Computer shifts to fourth or not.
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Old 07-14-2004, 10:25 AM   #25
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the trannsmissions are not tottaly different they are not really different at all just tha excursions have bigger trannys but they work in the same way they are just stronger trannys. now a cvt tranny thats different but in the mustang and excursion transmissions work the same just that one can handle more power
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Old 07-14-2004, 10:33 AM   #26
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no i meant physically. an excursion transmission is like a tranny from a semi compared to a 3.8 tranny. the gearing is diferent due to size and weight of the truck, and the strength is multiples of ours. its literally comparing sports cars to heavy duty trucks. a transmission is a transmission in the mechanical sense, clutches etc. but literally an excursion transmission next to a 3.8 tranny is bigger, weighs alot more and is a whole lot stronger. i wish my transmission had its wieght and size but the strength of a v10 excursion transmission, you know how much more power those can handle. wouldnt be surprised for an extra 150-200 hp.
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Old 07-14-2004, 10:36 AM   #27
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2: we just said the same thing... oh well
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Old 07-14-2004, 10:38 AM   #28
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i thought you meant that the trannys mechanichs were different i misunderstood you
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Old 07-14-2004, 10:40 AM   #29
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heh we weren't meant to understand eatch other .. redsox-yankees... touchy subject.
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Old 07-14-2004, 10:43 AM   #30
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you like the red sucks
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Old 07-14-2004, 10:47 AM   #31
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hey if the redsox were lead by a facist regime, funded by......... nevermind . i fight the battle daily. yes the redsox suck half the time.. but some times they do real good .. like when they won 6 of 7 earlier.. then they got swept.. typical sox.
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Old 07-14-2004, 10:53 AM   #32
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B&M kits are only good to 99, theres a little check valve in the 00+ tranny, B&M hasn't made one for a 2000+. Aleast thats what B&M told me a couple months ago. The only kits out for a 2000 or newer are Transgo, and Superior as far as i know.
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Old 07-14-2004, 11:04 AM   #33
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aight cool thanks man, keep me posted if you hear anything new, ill be sure to do the same.
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Old 07-14-2004, 03:18 PM   #34
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How do I launch on an automatic? What's a stall converter and how do I use it?
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Old 07-14-2004, 03:34 PM   #35
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its a torque converter which gives you power in the first two gears you can buy one with a high stall speed like 3000
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