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Th400 advice

So I was hoping to stumble upon a post with the information im searching for. But all that i could find are the "whats needed for the swap" posts.

Im about to pull the trigger on a trans & convertor from ATI. But I was unsure what ratio i should go with for each gear.


The build is a 2013 charger rt. 

6.1 based 426 stroker, Thitek heads, DSS 9" w/3.55 gears, twin front mount s366's, and possibly a 150shot through a direct port setup. Car weighs roughly 3900-4000lbs

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