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post #1 of 10 Old 11-09-2007, 04:41 PM Thread Starter
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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

2001 F350 4x4 crew cab short bed lariat
k&n intake
Dual mbrp turbo back exhaust
DP Tuned
Dipricol Optic gauges
8inch danahoe lift
4:30 gears
Built tranny
Headlights
Recon lighting
20x10 moto metal 951 wheels
37x13.5x20 toyo M/T tires
Superlift truspeed
Kenwood DDX 6019
6.5 O2s mid drivers
4 12 Kicker L7s cut through in a bandpass box


Dads truck
Stock F250 lariat 2008 green and tan

Pulling truck
04 lariat dually red/maroon and silver
Full Banks System
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post #2 of 10 Old 11-11-2007, 02:45 PM Thread Starter
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......help

2001 F350 4x4 crew cab short bed lariat
k&n intake
Dual mbrp turbo back exhaust
DP Tuned
Dipricol Optic gauges
8inch danahoe lift
4:30 gears
Built tranny
Headlights
Recon lighting
20x10 moto metal 951 wheels
37x13.5x20 toyo M/T tires
Superlift truspeed
Kenwood DDX 6019
6.5 O2s mid drivers
4 12 Kicker L7s cut through in a bandpass box


Dads truck
Stock F250 lariat 2008 green and tan

Pulling truck
04 lariat dually red/maroon and silver
Full Banks System
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post #3 of 10 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.

99 F350 4x4 dually
7.3 w/K&N af
4" exh into 6" Aussies stacks
4"lift &35" tires
CC mod HP crossover line
Beans stage II 120hp injectors
D66 turbo
ITP regulated return
reburn on TS= 25,high idle,60,100,120,140hp
updated ecm (2000 model)
Dyno#'s 360hp and 965 ft lbs trq
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post #4 of 10 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.

02 lariat cc lb, bullydog chip, bullydog shift kit, airraid intake, mbrp 4" downpipe back muffler delete, Zoodad, ccv, aih delete, ac upgrade, stadium seating, 6.5 inch lift, 37x13.50x17 toyos mt's, alpine in dash dvd
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post #5 of 10 Old 11-12-2007, 02:18 PM Thread Starter
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thanks for the help so far i need all i can get

2001 F350 4x4 crew cab short bed lariat
k&n intake
Dual mbrp turbo back exhaust
DP Tuned
Dipricol Optic gauges
8inch danahoe lift
4:30 gears
Built tranny
Headlights
Recon lighting
20x10 moto metal 951 wheels
37x13.5x20 toyo M/T tires
Superlift truspeed
Kenwood DDX 6019
6.5 O2s mid drivers
4 12 Kicker L7s cut through in a bandpass box


Dads truck
Stock F250 lariat 2008 green and tan

Pulling truck
04 lariat dually red/maroon and silver
Full Banks System
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post #6 of 10 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!

01 F-250 SC PSD,320k,16 Isspro Gauges, AFE-2,CCV Mod,IAH delete,map reg,Modded H2e, 6.0 IC, 230/100 from P.I.S, Studs, 910 springs, Forged rods, Water injection,Hydra chip-No Limit/Gearhead tuning, Swamps HVHF IDM, MBRP 4" dual's, Aero, 6" tip's, 4" Revtek lift, 37/12.5/16.5 MT's
Joe



DYNOPROVEN.COM, PERFORMANCEINJECTIONSYSTEMS.COM and RIFFRAFFDIESEL.COM
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post #7 of 10 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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post #8 of 10 Old 11-15-2007, 03:22 PM Thread Starter
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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

2001 F350 4x4 crew cab short bed lariat
k&n intake
Dual mbrp turbo back exhaust
DP Tuned
Dipricol Optic gauges
8inch danahoe lift
4:30 gears
Built tranny
Headlights
Recon lighting
20x10 moto metal 951 wheels
37x13.5x20 toyo M/T tires
Superlift truspeed
Kenwood DDX 6019
6.5 O2s mid drivers
4 12 Kicker L7s cut through in a bandpass box


Dads truck
Stock F250 lariat 2008 green and tan

Pulling truck
04 lariat dually red/maroon and silver
Full Banks System
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post #9 of 10 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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post #10 of 10 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.

2002 F-350 Crew Cab 4X4 Donahoe Lift kit, 38" Toyo open country mudd, AMP research Steps, 4.56 Gears, Mag Hytec Diffcover and Tranny Pan, Superchip, AFE Stage 2,Wicked Wheel, 4" exhaust turbo back.
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