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What gears do I have ?

Mikeextrafast

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I have a 2018 GT auto what rear end gear would have come in the car ?
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18 Smoke

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I have a 2018 GT auto what rear end gear would have come in the car ?
Either 3.15 or 3.55. If it’s a PP car, they’re 3.55. Have a dealer run your vin if you don’t have window sticker
 

ugstang17

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The factory tag in the drivers side door jam will tell you the axle code. Then simply google it...assuming the R/P is stock. Otherwise put the car on jacks, place in neutral. put a mark on the inside of the tire, rotate the drive shaft and count the rotations until the mark on the tire makes one full rev and you then know your gear ratio on the diff.
 

RangersGT

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I have a 2018 GT auto what rear end gear would have come in the car ?
There is a tag on the back cover. It should either show 3L15 or 3L55.
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