I read alot of good about gears. All I want is to be able to take off fast from a green light or from a stop sign and gears sounds like it will be good for that.
Some questions do gears require a tune? What size gears should I get and where should I buy them? Do I need anything else to go along with the gears? How do I get my speedometer to work after getting gears? Can gears screw up my car in anyway? I heard somewhere it can give you transmission problems?
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2008 v6, black fuel door, rear black out panel, 8 inch antenna, Ford racing dual exhaust, 3rd brake light mustang decal, sequential taillights
Future- 4.10 gear kit from ford racing, eventually a CAI and tuner combo
For best acceleration you want 4.10s.
Gears require a tune which will also fix the speedometer.
You need a gear rebuild kit if you have a lot of miles on your car.
You can buy them from Mustang Parts & Performance - American Muscle... Or any other place that sells FRPP gears (don't get Motive).
They shouldn't screw up the car, but if the install isn't perfect they'll whine.
You have a 7.5" open differential... I'd highly recommend grabbing an 8.8" posi (from a GT) off of OEM Parts & OEM Wheels - Original Equipment Parts from NewTakeOff with 4.10s already installed!
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All show... So far. Exterior: Roush Front Fascia w/o chin spoiler, Black Billet Foglight Delete Grille, hidden smoked foglights, GTS Blackout Panel, smoked tail lights, WebElectric Sequential tail lights, MUSTANG 3rd brake light, 14" Shorty Antenna. Interior: Red piping, RVinyl Aluminum Dash Kit, CDC Aluminum Pedal Covers.
Why do you recommend getting an 8.8 posi? Just curious, I'm thinking about putting some 4.10's on mine, but the 8.8 posi is going to cost a whole lot more than just getting the gears and the rebuild kit. Also, why not get the motive? Looks like american muscle only has motive for the 7.5.
personally I think 3:73s are the best but thats just my opion. It gives you the get up and go and it still gives you descent gas milage out of a v8 and im sure prolly wouldnt make much difference in a 6
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94 Teal Gt. Mac O/R Xpipe,Flowmaster 40's,short shifter,Saleen Style rims with Nitto Nt555, Interior overhaul to all black with racing seats,C.A.I,3:73 gears,King Cobra Clutch, Schoche Hi-Performance battery terminals(4 show and system-When i get a amp)10.4MM Trickflow wires. MSD Cap and rotor,Alpine deck, mach 460 sound-Interior done-Now motor work
For best acceleration you want 4.10s.
Gears require a tune which will also fix the speedometer.
You need a gear rebuild kit if you have a lot of miles on your car.
You can buy them from Mustang Parts & Performance - American Muscle... Or any other place that sells FRPP gears (don't get Motive).
They shouldn't screw up the car, but if the install isn't perfect they'll whine.
You have a 7.5" open differential... I'd highly recommend grabbing an 8.8" posi (from a GT) off of OEM Parts & OEM Wheels - Original Equipment Parts from NewTakeOff with 4.10s already installed!
SO I also have to purchase a tuner along wit the gears? And what is a posi?
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2008 v6, black fuel door, rear black out panel, 8 inch antenna, Ford racing dual exhaust, 3rd brake light mustang decal, sequential taillights
Future- 4.10 gear kit from ford racing, eventually a CAI and tuner combo
Because of the gears are basically going to have your drive shaft rotating faster (higher RPMS for the same speed) and your speedometre uses this rotation to determine speed it will be screwed. Not it will always tell you that you are going faster than you really are, not the worst thing in the world but a pain in the butt still.
If you want the gears and no tuner you can go to a dealership and they will retune the speedometre for you (same way they would if you got new tires) but it is fairly costly, and it would be better to spend your money on the tuner with some custom tunes so you get a performance spike out fo your car as well.
As for the tires, the gears will have no real effect on them. Your snow driving will be more difficult though, just in the accelaration aspect though, once moving it will be the same. Hope this is helpfull.
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2007 4.0 V6 Premium Mustang -- Auto, Vista Blue
Perfomance Mods -- C&L CAI w/ 91 Race Tune (BamaChips), Steeda STB.
Why do you recommend getting an 8.8 posi? Just curious, I'm thinking about putting some 4.10's on mine, but the 8.8 posi is going to cost a whole lot more than just getting the gears and the rebuild kit. Also, why not get the motive? Looks like american muscle only has motive for the 7.5.
An 8.8 is one of the strongest possible differentials one can get. The strongest on the market is a 9... So the 8.8 is way up there! Even if you supercharge your V6, an 8.8 will be able to handle the extra power like a breeze.
As far as the "posi" goes...
Have you done a burnout in your current V6? If you have, you may have noticed that only 1 wheel spins... Which means not all your power is transferring to the wheels! Thats called an "open" differential which is fine, but not the best for performance driving. A "posi" or traction lock system will make both wheels spin... Cooooool!!!
Quote:
Originally Posted by Lennys94
personally I think 3:73s are the best but thats just my opion. It gives you the get up and go and it still gives you descent gas milage out of a v8 and im sure prolly wouldnt make much difference in a 6
Quote:
Originally Posted by MustangPonyGirl
I've always heard 3.73 for manual and 4.10 for autos
It's all preference... People just say that because someone else told them that, etc.
Sometimes its better to have a lower gear (i.e. 3.73s) for things like road racing... Where as higher gears (i.e. 4.10s) are generally better for drag racing.
But there's no set rules! Pick whichever you want...
Quote:
Originally Posted by babyjordan
SO I also have to purchase a tuner along wit the gears? And what is a posi?
Quote:
Originally Posted by babyjordan
I found this is this everything I need? Will my speedometer still work? If not I dont reeally care but will it with this set?''
That set is PERFECT! You need a tuner to recalibrate your speedo and change your shift points if you have an auto. The biggest reason you need to recalibrate the speedo is for not only the tachometer... But the odometer as well!
I'd be careful with Motive gears... To many horror stories in the past for my liking. Spend the extra $20 and get a gear set that won't "whine" 24/7!!!
(Whining... like screeching! Not good & somewhat common with Motive gears.)
You'll be fine driving in the snow... You need to be careful with the gas though because it'll be easier to spin the tire(s)...
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All show... So far. Exterior: Roush Front Fascia w/o chin spoiler, Black Billet Foglight Delete Grille, hidden smoked foglights, GTS Blackout Panel, smoked tail lights, WebElectric Sequential tail lights, MUSTANG 3rd brake light, 14" Shorty Antenna. Interior: Red piping, RVinyl Aluminum Dash Kit, CDC Aluminum Pedal Covers.
First off, gears are a great mod, but your speedo must be calibrated with a tuner or by the dealer or it will be way off from your actual speed.
If you're installing gears without a limited slip differential (posi, trac-loc, etc.) then all you're going to do is spin 1 wheel better. It's going to make it even harder to hook up from a stop which will decrease your performance. Limited slip, along with a speedo calibration, walks hand in hand with a gear swap.
If you have a loud exhaust and do a fair amount of highway driving in your car (20-30 miles or more per day) then you'll want to go with 3.73 gears rather than 4.10's. 4.10's will make you accelerate faster, but will also make a lot more noise on the highway as your RPM's will be much higher than stock. With 3.73's you get the same effect but your RPM's at 75mph are just before the 4.0 starts to get too loud to bear.
If you don't care about headaches from exhaust drone on the freeway or fuel economy then go for the 4.10's.
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Black 2005 Mustang v6, 5 speed, IUP, EUP and Leather.
Razzi 1/4 window scoops, Mustang GT Sway Bars, Flowmaster American Thunder Single Exhaust, Clear Front Turn Signal Lenses, Demolet CAI, X-cal2 91 tune, Hurst Comp/Plus Shifter, FRPP T-Lock, Ford 3.73 gears
So the ford racing set has everything I need but I will have to get the speedometer recailbrated?
I will probally go ahead and do this I will purchase everything and have it installed in the spring. My wifes is already pissed about what i have been spending I have to really talk her into this one.
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2008 v6, black fuel door, rear black out panel, 8 inch antenna, Ford racing dual exhaust, 3rd brake light mustang decal, sequential taillights
Future- 4.10 gear kit from ford racing, eventually a CAI and tuner combo
You need a tuner to recalibrate your speedo and change your shift points if you have an auto. The biggest reason you need to recalibrate the speedo is for not only the tachometer... But the odometer as well!
The ford dealership can do this for me right? Whe I got my exhaust installed they didint seem to smart I really hope they know what they are doing. I hear you really have to have them installed correctly and it is hard to do.
I am excited now I cant wait to get it all done. I will probally just have the dealership recalibrate everything instead of buying a tuner they are still to smart for me.
Any idea what it would cost to get the whole ford racng gear set installed plus recalibrating everything?
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2008 v6, black fuel door, rear black out panel, 8 inch antenna, Ford racing dual exhaust, 3rd brake light mustang decal, sequential taillights
Future- 4.10 gear kit from ford racing, eventually a CAI and tuner combo
Info on gears please 
Not good & somewhat common with Motive gears.)
