Ok here is my problem. I have a 2000 F-150. I put 33/12.5/17 tires on my stock 17 rims. I changed my gears from 3.55 to 4.10. My speedo now reads approx 7mph faster then I am realy going. I do not have a speedo gear in my trans. I have to have it done by the computer. Does anyone know if Ford will do this? I have heard story's that say they will do if for a tire change but not for a tire and gear change. That will su*k big time! This also means that I am putting more miles on my truck. Has anyone come across this problem before. And can I get it fixed? Thanks in advance.

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2000 F-150 sport 4.2 v6 auto transmission
Jacobs Ignition
K&N
Superchip
Throttle body spacer
cat back exaust
Custom Seat Covers
Dash Mat
Ford Floor Mats
Cd player
pioneer Speakers
Rockford Amp
Truck Box
Rhino Liner
Grill Gaurd
Nerf Bars
custom graphics
tail light covers
Vent Visors
Driving Lights
tinted windows
Fabtech spindle lift
3 inch body lift
lift lips
33/12.5/17 Procomp A/T
4.10 gears(had 3.55)

 

If it helps...I've been told the only thing they can do is program the truck for a different gear ratio. But even that would have to be a factory gear ratio. I don't believe they can program for a 4.10 rear because the f-150 does not come with a 4.10. The best thing to do is to contact Mike T. (look for him in the computer chip category) and buy a superchip with a custom program to correct the problem. He will need to know how far off you are a different speeds in order to figure out the percentage of difference between now and before the changes.

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MY TRUCK:

99 F-150 4x4, 5.4 Triton, 3.55 gears, Amazon Green-Harvest Gold two-tone.

MY MODIFICATIONS:

Lund bug shield

Window vent visors

17" Chrome ORP wheels

Clarion in-dash CD

Husky floor liners

Custom dual exhaust w/Flowmster muffler and dual 3" chrom tips

Hidden hitch

K&N Filter

SUPERCHIP FLIP CHIP

Extang tonneu cover

Rancho RSX Shocks

 

Tuscon truck,

By the way, did those tires fit without a lift or trim job?

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MY TRUCK:

99 F-150 4x4, 5.4 Triton, 3.55 gears, Amazon Green-Harvest Gold two-tone.

MY MODIFICATIONS:

Lund bug shield

Window vent visors

17" Chrome ORP wheels

Clarion in-dash CD

Husky floor liners

Custom dual exhaust w/Flowmster muffler and dual 3" chrom tips

Hidden hitch

K&N Filter

SUPERCHIP FLIP CHIP

Extang tonneu cover

Rancho RSX Shocks

 

No I had to get a body lift and spindle lift. Thanks for the reply.

 

 

I HAVE A 2000 F-150 WITH 37" BFGS T/ AKO TIRES ON 17X10 WELDS. THERE IS NO RUBBING JUST A LITTLE TRIM OFF OF THE FRONT VALENCE. IN TWO WEEKS SUPERLIFT IS COMING OUT WITH A SPEEDO FIX FOR TIRE/GEAR CHANGE FOR THE FORD. ALL I KNOW IS THAT IT HOOKS NEER THE TRANS. WILL LET YOU KNOW WHEN AND HOW IT WORKS.

 

Radar lets see a picture of your truck. how much lift do you have? is it a 4x4?

 

My truck is a 2wd with a 9 1/2" lift by fabtech.No pitures yet, but as soon as i get some i will posts them.