wishinsky

I am keeping my Car N/A but I want it to pull harder on other cars around the town, and also put my girlfriend back in her seat harder! I want to upgrade to 4.10s but I have a couple questions. Also I listed current mods that will be done.

30-70 mph would there be a huge walk away compared to my stock gears?
70-130 mph will the car still be accelerating faster?
Traction be a "huge" problem with 275 tires?

2013 mustang 6sp Auto/select shift
3.15 Gears
1.5" FRPP suspension package
Boss 302 tubular control arms & Relocation brackets
275/40/19 Pirelli's on rear
Ford Tune
GT500 axle back
FRPP intake Manifold (not installed yet)
Cobra Jet Throttle body (Not installed yet)
Cobra Jet CAI (Not yet installed)

scottmach

Waste of money. The autos come with aggressive gearing in the transmission hence the 3.15's. Putting 4.10's in the auto is the equivelant of putting a 6.xx gear in the fox body. No one did that did they? What you want is a converter.

wishinsky

I have been looking previously and I found one place online that sold them for the 2013. I had found the website in a magazine but I can't seem to find it now. Do you happen to know a website?

outceltj

yeup torque convertor is you best option. 410s will give you some more snap but you might notice a drop from 70 to 130. at those speeds you just need more power to be effective.

JIM5.0

Your car is equipped with the 6R80, which has a very deep 1st gear already, 4.17:1.
Going with a 4.10:1 rear gear makes your 1st gear like ***** on a bull: you can't use at all. Your car will barely remain in 1st and almost instantly shift to 2nd.

If you insist on changing your rear gear, going with 3.55:1 would be much better.

Bear in mind that the 4.10:1 rear gear ratio is really intended for transmissions with a much shallower 1st gear, like the T56's 2.66:1 1st gear.

drewsky

Yah I agree with all the above. 4.10's are not gonna do anything for you with an auto trans!

wishinsky

Hey I still can't seem to find a Converter for a 2013 AT any links?
Also how about that 2 step American Muscle sells?

scottmach

https://www.circledspecialties.com/c-96-6r80.aspx