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Old 07-04-2009, 01:31 AM   #1
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Question gears? HELP!!!!

i have been posting in the introduction thread, just figured id post out here. ive got a 1998 V6 mustang, completely stock. im getting CAI, and maybe some pulleys pretty soon, but ive been thinking about gears, i figured that if their even necessary id go for 4.10. but if its really reccomended that id go for 3.73. so id like to hear from you guys just to get an opinion. so are thay necessary or not?
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Old 07-04-2009, 11:18 AM   #2
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Re: gears? HELP!!!!

They definitely are necessary. They will help with launches, acceleration, and better power distribution throughout the powerband.

If you're an auto, 4.10's are the preferred ratio, but you could get 3.73's or 3.90's.
If you're a manual, 3.73's are the preferred ratio, some people use 3.55's.

I've hard that 4.10's in a manual are too tall, but I personally couldn't tell ya.
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Old 07-04-2009, 12:20 PM   #3
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Re: gears? HELP!!!!

yea if auto you can go with 4.10s due to the fact that the auto transmission is geared higher so the lower 4.10 gear will even it out vs the 5 speed. You have a low power band, it will peak SUPER fast in your single port so keep that in mind, you will go up very quickly in the rpm range lol. I would probably do 3.73s for dd'ing the car and a shift kit with a tune to firm up the shift pressure. Make sure you do a tlok unit, same effort as putting in gears.

also note with gears you will have to correct your speedo, a speedo gear that goes in the transmission will not get it 100% accurate, you can see if a speed cal will work, it should, it is the best option.
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Old 07-04-2009, 12:30 PM   #4
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Re: gears? HELP!!!!

wow, ok, how much are speedo's and or a speed cal? could i just take it to a dyno for that. but yeah mines an automatic, i didnt feel ready for a manual at the time. but im definatly going to get gears if their this important.
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Old 07-04-2009, 12:46 PM   #5
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Re: gears? HELP!!!!

American Muscle has one for $99.99 that works on 94-98 autos. That'll adjust the speedo when doing gear/tire changes.

Speed Calibrator - SpeedCal at AmericanMuscle.com - Free Shipping!

I'd consider a tuner by SCT or Diablosport since you have an auto. It'll really firm up your slushbox tranny and add a few ponies and possibly gain some mpgs with a conservative tune.
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Old 07-04-2009, 01:04 PM   #6
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Re: gears? HELP!!!!

i was just reading an article on how to instal gears, uhm, would it be better to takee it to the shop and have them do it. because it says to tke of the wheels and brakes, drain the fluid out of the "pumpkin" (but i figured that) and then turning the gears certain ways to get them out. and thanks for the speedcal link btw
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Old 07-04-2009, 02:27 PM   #7
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Re: gears? HELP!!!!

Oh yeah, I'd definitely take it to a reliable, trustworthy, reputable professional shop to have the gears installed. Certain tools are needed to set the backlash and pinion crush sleeve. You can't just put the gears/tlok in and go, any shop that says you can, I'd stay away from.

As Spector V stated in a thread before, make sure to get a written warranty covering any issues regarding whining or breaking for a certain amount of miles. If you leave the shop without a warranty and have issues, there's a 110% chance the shop is going to blame it on you - racing or harsh driving habits.
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Old 07-04-2009, 02:47 PM   #8
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Re: gears? HELP!!!!

how much would the ford dealership charge. too much?
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Old 07-04-2009, 03:09 PM   #9
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Re: gears? HELP!!!!

They probably would charge a ton, but it is a Ford dealership. Not saying there's a 100% of everything going correctly, things do happen, but usually they give out warranties on such work. The only thing with dealers is they usually won't install any aftermarket parts that aren't theirs. They don't want the liability of something going wrong after installation of non-ford parts.

You'd have to see if you could order the 7.5inch ford racing gears and tlock from the dealership, then they'd install it. At least that's the policy of the Ford dealership by me.
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Old 07-04-2009, 08:06 PM   #10
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Re: gears? HELP!!!!

hm, i mite have to look around. the only thing is that my parents cant know that im doing this haha. im not a bad kid i promise, just dont ike telling them things. they dont trust that i know what im doing and that im not hurting the car. how much are tloks, what site cud i find them on? and now that ive got most of the performance thought threw, id like to talk bout suspension, caster camber plates?
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Old 07-05-2009, 01:29 AM   #11
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Re: gears? HELP!!!!

You need cc plates when installing lowering springs that lower the car more than 1 inch.
They help keep your alignment in check and prevent the tires from cupping or wearing unevenly due to the new spring compression and height.
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Old 07-05-2009, 08:44 AM   #12
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Re: gears? HELP!!!!

when lowering, do i need isolators? and how do you adjus cc plates after installment and know thier correct
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Old 07-05-2009, 10:29 AM   #13
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Re: gears? HELP!!!!

you need some kind of isolator even if its stock
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Old 07-05-2009, 10:37 AM   #14
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Re: gears? HELP!!!!

make a new thread for new questions, it gets you better answers

you cant calicbrate the speedo for pre 99's with a tuner, its gear driven.

gears 200, tlok 200, install 300, speed cal 100 thats about it~
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Old 07-05-2009, 11:08 AM   #15
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Re: gears? HELP!!!!

then he would surely be beat to death by the mob for not using search
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