Ring and Pinion

Postby turbocal » 27 May 2009 3:31

I intend to put a 4:10 rear gear in my 70 challenger. It has a LSD 489 case. I was told by someone that I need to know if the spline pinion yoke is a 29 or a 10. How can I determine this, and which ones did the challengers come with the most? thanks
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Postby Alaskan_TA » 27 May 2009 3:59

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