Speedometer Gear Assistance
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Senior User
Joined: Nov 2001
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Speedometer Gear Assistance
I used the formula to come up with this:
1990, f-150 E4OD 2wd with 300-6
drive gear: 8tooth?? what i was told
axle ratio: 3.73
Current tires: 235/75-R15 Uses a 21 tooth gear
New tires: 32.0x11.5-R15 Calculated to use 19 tooth gear
What I want to know is the part numbers and color codes especially for these gears, and maybe entire list of all the speedometer gears for my truck.
Thanks for all the help
1990, f-150 E4OD 2wd with 300-6
drive gear: 8tooth?? what i was told
axle ratio: 3.73
Current tires: 235/75-R15 Uses a 21 tooth gear
New tires: 32.0x11.5-R15 Calculated to use 19 tooth gear
What I want to know is the part numbers and color codes especially for these gears, and maybe entire list of all the speedometer gears for my truck.
Thanks for all the help
Senior User
Joined: Jun 2003
Posts: 188
Likes: 0
From: Wesley Chapel, FLA
I got that information from the parts guys at a Ford dealership once. Been a while though, and this was a pretty good old time dealership with people who actually knew what they were doing. But I still think it's probably the best place to look.
Senior User
Joined: Jan 2004
Posts: 161
Likes: 1
From: The KeyStone State
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