Gears and 1/4mile times

[zacharybunting]

I'm switching to 4.10s from the stock 3.23s on my 07 gtcs..with it I'm adding a SCT X3 PowerFlash tuner to correct for the speedo and to get a general tune...does anyone have any experience or info on what the upgrade to 4.10s does to the quarter mile time? thanks for any advice you can give...

2007 Mustang GT/CS Convertible
K&N Intake system
Axleback 40 Series Flowmasters
4.10 FRPP gears
SCT X3 Powerflash Tuner

 

[BurningRubber]

You may want to repost this in the 2005+ area of the forum. This is the 4.6 tech, but it is basically the 96-04 zone...

For what it's worth though, assuming you can keep traction with the gear swap expect .2-.3 1/10ths improvment on your ET's.

 

[2001GT281]

well my 01 GT went from 13.1 to a 12.7 from adding 3.90 gears if that helps give you any idea. But I run full MT slicks also.
The biggest difference I see from bigger gears is when I launch at the starting line my car dosen't bog like it did with the stock 3.27 gears.

 

[flstang65]

I was running 13.7@101 w/ a 1.90 60ft before my gears. I put in an Auburn Posi, 31 spline axles and 4.10's. Now, I can't get it too hook to save my life, even with drag radials. My problem is that I have the suspension set up more for the street than the track. Now I have something to spend money on...a new suspension set up Also, Orlando Speedworld sucks major A$$. I'm going to try going to Bradenton to see if I can do any better there.

 

[NitroDuck]

I went from a 13.93 @ 102 mph at sea-level with the stock 2.73s to a non-corrected 13.88 @ 101.9 with the 4.10s @ 3300ft DA.

I haven't corrected that E/T in a while, but I believe it translates to roughly 13.5-13.6 at sea level. I'd say 3 tenths, give or take, with my combo (see sig.)