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Have a 2013 Charger RT. 5.7. Anyone know how to find the rearend gear ratio. Looked on the window sticker but didn't see it.
 

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Have a 2013 Charger RT. 5.7. Anyone know how to find the rearend gear ratio. Looked on the window sticker but didn't see it.
Easy way or hard way?
Easy way put your vin into a build sheet window on the internet or just call the dealer with your last 8 of the vin. Ask for parts and the for a price quote on a new rear ring and pinion and ask them what is the ratio is that.

Some dealers can be pricks unless you might be buying something.

In the odd event all that fails, jack rear of car up on level ground, put in neutral, turn tire but hand one full turn. Count the turns on your drive shaft. That will get you close to where you can figure it out.
3:23 obviously the driveshaft will turn 3 and 1/4 times.
3:55 will turn 3 1/2 times

And so on and so on.

Good luck
 
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