Quote:
Originally Posted by Steph93lx
3.15
On 2011-2017 mustang with bolt on we have seen faster time with 3.15 gear and 26" tire. 3.31 and 27-28" with a A6 and 3.31 gear is good also that is with the 6 speed and a less aggressive first gear.
You are probably right regarding the 18 A10 and 3.55 I guess they can't launch it that much harder!
But nobody's know for sure with the 18. Only 6 run lol. We shall see.
By the way your car is fast 
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Thanks. Yours aint too bad either. Im running a 26 tire now I picked up a little over my old 28. I also want a 3.08 gear if they ever come out. That would put my 5th gear at around 130 mph give or take. I think ill pick up a couple tenths with the 3.08. Want to keep the stock converter until if and when I do heads/cam.
Yeah id go with the 3.15. Although with a slick/radial the 3.55 will hook. With stock tires though the 3.55 and street tires gonna be tough to launch.