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Discussion Starter #1
1. will mustang 8.8 ring and pinion fit in a irs traction lok rear

2. what do you think will be the best ratio for my car i do between 15-20k miles a year of mixed driving 3.55 or 3.73
 

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what is your gear ratio now?

new RPM = 3.73 / old ratio * 2200
 

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Discussion Starter #6
no clue what it is now

one more thing the splines on the pinion are the same for all 8.8 rears
 

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Sheepish
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Mine spins 2500 at 75mph with the 3.73s.

Don't fear the gear. Get the bigger step up if you're going to spend the money to change em. Thats a lot of money for little gain if you went with something like 3.55s over 3.27s...
 
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