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Author
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Topic: Who has changed gears in their 97 and up F150?
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jdsgallops
Gearhead Posts: 263
From: Green Bay, WI
Registered: Feb 2001
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posted 08-27-2001 09:30 AM
   
Over the winter I am hoping to get some 4.10's or 4.30's in my mustang. That means I will have 3.73's coming out of it. I would love to throw these in my 97 f150 4.2 6cyl 5speed truck. I know these weren't an option so how hard is it to get the speedo right, and do I even have an 8.8 in the truck? Thanks John------------------
83 Gt W/ lots o mods.
Best Et [email protected] N/A
Best N/A MPH 101.4
[email protected] on 7 cylinders and 125 shot of nitrous.
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MLariviere
Moderator Posts: 1947
From: Biddeford,Me.USA
Registered: May 99
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posted 08-29-2001 09:15 PM
Don't you have to get into the computer to change the speedo on a newer truck? What do you have for gears presently? The rear is an 8.8" . If you are in the 3.50 ratio now,I don't think you would notice much of a gain in performance.
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jdsgallops
Gearhead Posts: 263
From: Green Bay, WI
Registered: Feb 2001
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posted 08-30-2001 12:07 AM
Truck has 3.08's now. What I have been told is there is a sensor that reads the wheel speed and a speedo gear till middle of 98. I am just trying to verify this is true. 3.55 were an option for those years. Why buy new when you already have something that can go in, unless it is too big of a hassle.
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SteveLaRiviere
Administrator Posts: 16706
From: Saco, Maine MCA # 47773
Registered: May 99
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posted 08-30-2001 01:06 PM
The owner's manual on my '94 says Ford will recalibrate the computer for tire size and axle ratio changes for free for 6 times, IIRC.------------------
'70 Mustang Mach 1 M code 351C 4V/FMX/3.25 open
'72 Mustang Sprint Coupe 351C 4V/FMX/4.30 Trac Lok
'94 F-150 XL 5.8L/E4OD/3.55 Limited Slip
'97 Probe GTS 2.5L DOHC
Keep your driveway ALL Ford!!!
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65hoss
Gearhead Posts: 277
From: Memphis, TN
Registered: Feb 2000
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posted 09-24-2001 01:45 AM
I had the 3.08's taken out of my 98 f150 and 3.73's put in. My speedo is off. It is a gear just like the old tranny's have. All I need to do is run by a mustang shop and pick up the new one. This is the info the ford mechanic that did it told me. Right now, with that gear change the mph is off by 8.
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