3.73 Ford Racing Gears or a JLT Cold Air Intake??
... I'd do both! 
11-23-2010, 08:45 AM
#4
3rd Gear Member
Join Date: Nov 2010
Location: Vancouver, British Columbia, Canada
Posts: 535
Welcome to the MF muellergt2007, from beautiful British Columbia, Canada!
If you asked what I'd do, I'd wait and do the whole works at one time;
me personally, I'd get 4.10's...but that's just me.
If it's your DD, better go with 3.73's
Let's see some pics of the '07 GT, when you get a chance
Larry
If you asked what I'd do, I'd wait and do the whole works at one time;
me personally, I'd get 4.10's...but that's just me.
If it's your DD, better go with 3.73's
Let's see some pics of the '07 GT, when you get a chance
Larry
Last edited by Larry Warcup; 11-23-2010 at 12:29 PM.
11-23-2010, 01:31 PM
#7
2nd Gear Member
Join Date: Jun 2009
Location: California
Posts: 277
You will notice the biggest change in the seat of the pants from the gears by far. But your Speedo will be off and so you will need at least a recalibration of that. Ford Dealer can do the deed up to 3.73s if you don't want to buy a tuner right away.
11-23-2010, 04:15 PM
#8
6th Gear Member
Ditto. CAI & tune first, not just because of the need for the handheld to reset your gear ratio in the PCM but for the overall driveability changes (not to mention the extra 20-25 RWHP).
11-23-2010, 05:29 PM
#9
I'd do the CAI/Tune first then the gear. Depending on your stock gear, you may want to do 4.10's. Also as stated, you will need to recalibrate with your handheld. If it's an auto, you will then need an updated tune to adjust the shift points.
