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How do you install 373 gears on your mustang?

2 Answers

  • 2 months ago

    If you have to ask, you don't have the necessary knowledge/skill to do it.  A decent rear end/transmission shop can do it for around $300. 

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  • 2 months ago

    Installing new gear  ratio's into a Mustang is not something for a novice. It takes dial indicator gauges and patience. The wear pattern needs checked for the right loading.

    So if you want 373 gears plan on just purchasing a differential with that gear ratio. That is unless your Mustang has the good old Ford 9 inch rear end- in which case just a carrier that is already set up with that ratio can be swapped in.

    If you want to do it yourself, find some forum that addresses the differential you have and or buy a service manual.

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