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post #21 of (permalink) Old 09-20-2013
281racered3.7's Avatar
Joined: Jun 2013
Location: Houston
Posts: 190
Originally Posted by Strange Mud View Post
the only real hit will be on the hwy at cruising speed where at a give speed your rpm will be 15-20% higher. In town it'll be easier to get it going and if wanted you can be in a higher gear. I drove both and the 3.31 (or higher) is the way to go. Bad news to make the odo/speedo work properly you need to get a tune or have the dealer reflash for the gear ratio. Ford only supports up to the 3.31 in the V6.
I called a few dealerships around my area and all of them said they couldnt flash my car to upgrade my gears to 3.31. Wonder if anyone else has actually got a dealership to do this for them.

2013 3.7 mustang auto.
Mods: magnaflow catback- 20% tint- roush upper grille- AM billet lower grill- gt500 rear spoiler-jlt oil seperator- boss 302 strut tower brace- SVE drift wheels 19x9.5 on nitto nt555 275/35/19- 3.73's- ebay paddle shifters
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