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Discussion Starter · #1 ·
I was wondering how to tell which kinda axles and transfer case i have in my truck.

79 Ford 150
300 I6
4x4 with a t18
5 lug
 

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Is there any way to tell what gear i have in each?
You can look up the vin...

pull the covers and count the teeth...

use a gear ratio calc(you have to know how to do math)...

tag on the axles or stamp on the tubes...

jack it up and count how many times the tire spins...
 

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Most comon gears are the 3.50s. When its got a manual you may have 3.73s. If you are the lucky rare guy it could have 4.10s but I highly doubt it. Either way you have to do what was posted above. Find tags, take it apart, or turn the drive shaft and count how many times it takes the drive shaft to turn to make one full turn on your tires. If 3 and a half turns it 3.50s if 3 and three quarter turns its 3.73s. If its 4 turns consider yourself lucky, its 4.10s
 
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