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  #1  
Old 11-09-2007, 04:41 PM
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mod or stock tranny...gears?

my tranny in my truck is starting to slip i knew it was going to happen so I'm not surprised however i need some help deciding on what i should do. I'm lifted on 37s and if i just get ford to rebuild it is it goin to break again. or what if i just get ford to rebuild it and put gears in will it still slip or do i need to spend the money and upgrade the hole tranny and gears... i really thing that i need gears and i think if i do 456 its goin to kill my fuel mileages so i would do 430 gears i also want to upgrade my chip to a DP and a quadzilla monitor. any suggestions give me your opinion please
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Old 11-11-2007, 02:45 PM
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......help
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Old 11-11-2007, 03:08 PM
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If your trans is slippin I would get it rebuilt either John Woods trans or ATS is another good one. Then go after gears. Its not gonna go without a trans.
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Old 11-11-2007, 09:38 PM
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I am running a similar setup. IMHO Right now your tranny has to fight for everything it is giving you. If your were to make the jump to 4.30's then its easier on the tranny and youll still have decent fuel mileage. The mileage will drop on the freeway but go up around town. Look around for trannys elseware besides the dealership. BTS out of Arkansas always has good rating or have a reputable local shop rebuild it using performance suncoast parts. There are many ways to play with mileage and gears are one of the few. If you go to 4.56's it would give you more grunt and you could try to make up the mileage through other options(wicked wheel, ats housing, lighter right foot, etc). Good luck

P.S. Might want to do some research on that K&N. I've read that it aloows to much dust into the motor. I am going to drop my Airraid and go AFE instead.
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Old 11-12-2007, 02:18 PM
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thanks for the help so far i need all i can get
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Old 11-12-2007, 04:46 PM
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Been running 37's and 3.73 gears for years... Would not change it for the world! I can drive farther and cruise at lower RPM's then the other guys...

Get a tranny that can hold the power, be it BTS or John Woods...

BUT ATS SUCKS!
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Old 11-12-2007, 08:43 PM
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I would regear I ran 3.73s with 37s and around town at 1600 rpms was just to lagging and hard on the motor, unless you run with the OD off.

4.30s would be ideal 4.56 would be better if you plan on going to a bigger tire. and are about 100 bucks cheaper than 4.30s.

you new tranny will thank you
dont forget about BD and Suncoast also but BTS is tops on the list..
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Old 11-15-2007, 03:22 PM
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yeah i know that you mean about the lagging i hate it and when you go to get on it a little bit without making it down shift it doesnt sound heathly.... with 4.30 gear would my fuel milage rise or drop I'm getting like 12-14 around town and i can get 16 at the most on the interstate
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Old 11-16-2007, 08:46 PM
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my setup is the close to the same as yours and 15 is what i get on the highway.. I also have the superlift truspeed to calibrate the speedo.

I am running 1800 rpms on the highway at 70 now with 4.30s i am at 2100 back to where the engine should be.. whit will help fuel economy not hurt it..
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Old 11-16-2007, 09:27 PM
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I have 38's and 456's works great. My truck came with 4.88 but it was too low.
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