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07-17-2002, 11:50 AM | #1 |
Registered Member
Join Date: Aug 2001
Location: Mt. Clemens, MI, USA
Posts: 19
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Gear Swap
Hi Guys,
I have a 2002 GT and I'm thinking about changing the gear. It has a 3.27 now. I'm thinking about installing a 3.73. First, is that a good choice? Second, would I have to get my PCM reflashed (car has a digitial odometer)? My brother said I will have to. If that's the case, what kind of shop would do something like that? Thanks, - Mike
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2002 Black Mustang GT - Cold Fusion Wet Nitrous System (75 shot) - K&N Air Filter - Cold Air Intake - Saleen Springs - Steeda Tri-Ax Shifter - 3.73 gear - BBK Long-tube headers - Dr. Gas Off-road X-pipe - Borla Exhaust - Saleen lower control arms - Saleen underdrive pulleys Best 1/4 (w/o NOS): 13.68 @ 102mph Best 1/4 (w/NOS): 12.93 @ 108mph |
07-17-2002, 12:51 PM | #2 |
Mustang Addict
Join Date: Jan 2001
Location: McKinney, TX
Posts: 1,294
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Your choice of gear depends on what tranny you have and what kind of driving you mostly do. If it's an auto, I'd say go with 4.10s. If it's a stick then the choice between 3.73s and 4.10s mainly depends on how much freeway driving you do and if you mind losing the extra 1 mpg or so with 4.10s compared to 3.73s. If you plan on adding a power adder go with 3.73s or you will run out of 4th gear in the 1/4.
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Strike down the unroadworthy! 2000 GT Atl. Blue: '03 Cobra motor - 465rwhp/473rwtq, T-56 6-speed, full MM TA/PH & tubular K-member suspension, Saleen body, 17" Torq-Thrust II's, M/T ET Street radials, and lots more '94 Rio Red Cobra: All the bolt-ons, 3.73s |
07-19-2002, 03:15 PM | #3 |
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Join Date: Jun 2002
Location: Western,MA
Posts: 254
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i would recomend 3.90 gears it`s right in betwwen the 3.73 and 4.10 more torque duplication and relativly good rpms on the highway that you would not get with the 4.10`s o yeah and you will have to have the your car re flashed any dealer can do it.
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Rice Haters Club Member #55 For My car Specs Click the Home page link http://www.badassyellowgt.50g.com/ |
07-19-2002, 04:04 PM | #4 |
Mustang Addict
Join Date: Jan 2001
Location: McKinney, TX
Posts: 1,294
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If you don't want to reflash there is also an animal called the SpeedCal:
http://www.dallasmustang.com/speedcal_about.htm
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Strike down the unroadworthy! 2000 GT Atl. Blue: '03 Cobra motor - 465rwhp/473rwtq, T-56 6-speed, full MM TA/PH & tubular K-member suspension, Saleen body, 17" Torq-Thrust II's, M/T ET Street radials, and lots more '94 Rio Red Cobra: All the bolt-ons, 3.73s |
07-19-2002, 04:06 PM | #5 |
Mustang Addict
Join Date: Jan 2001
Location: McKinney, TX
Posts: 1,294
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As far as 3.90 gears go, who makes them and does anyone have experience with these? I had heard from some folks that it is best to stick with genuine Ford gears to avoid problems, but Ford doesn't make anything in between 3.73 and 4.10.
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Strike down the unroadworthy! 2000 GT Atl. Blue: '03 Cobra motor - 465rwhp/473rwtq, T-56 6-speed, full MM TA/PH & tubular K-member suspension, Saleen body, 17" Torq-Thrust II's, M/T ET Street radials, and lots more '94 Rio Red Cobra: All the bolt-ons, 3.73s |
07-19-2002, 04:20 PM | #6 |
Registered Member
Join Date: Jun 2002
Location: Western,MA
Posts: 254
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Rice Haters Club Member #55 For My car Specs Click the Home page link http://www.badassyellowgt.50g.com/ Last edited by Badass_yellowGT; 07-19-2002 at 10:29 PM.. |
07-20-2002, 12:18 AM | #7 |
Registered Member
Join Date: May 2002
Posts: 24
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Just finished installing 4.10's in my 00 GT. The "Speed Cal" installation was a breeze. My recommendation would be the 4.10's, RPM at 70 mph is about 2500, not bad for cruising down he highway. The bottom end 10 times better, the 1 - 2 powershift is the funnest!!!
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