Gears

bstang46 · 10-10-2001, 11:15 PM

I got a 01 GT, and i was wondering what amount of time would be gained with 4.10's and 3.73's. It is an auto too.
Oh that is track time

DOMIN8R97 · 10-11-2001, 01:27 PM

Go with the 3.73's to keep your gas mileage up. I've seen them drop 3 tenths to a half second in the quarter.

bstang46 · 10-11-2001, 11:11 PM

Thanks for the advice!!!!!!! What other simple mods can i do to can some more time.

91LX2Bfast · 10-12-2001, 10:46 AM

I am going to disagree and say go w/ 4:10's. The 4R70W is a wide ratio trans, so the gears won't have the same negative affect on gas mileage as the old AOD's. I mean, of course you will lose a few mpg over 3:27's, but do you want good acceleration or 2 extra mpg? The difference in mpg between the 3:73's and 4:10's would be so small too, its worth getting the steeper gear IMO.
The only advantage I can see about getting 3:73's would be less tire spin on launch. but agian, the difference of the two gears would be minimal.

------------------
1997 Thunderbird 4.6L: Dynomax cat-back, MN-12 perf. offroad downtubes and Y-pipe w/ Magnaflow resonator, 80mm MAF with cone filter, B&M trans cooler, Inject-Tech chip, MAC U/D pulleys, KVR front brake upgrade. 15.2 @ 91 before exhaust & pulleys. Not bad for a 3800lb auto 4.6L

No Longer own: 91 LX 5.0L 5 spd

98SNAKE · 10-12-2001, 06:05 PM

I agree with 91LX2Bfast go with the 4.10's. Other mods too start off with include under drive pulleys,k&n air filter, after market cat-back system,h or x-pipe. Just too name a few.

Will

------------------
98Cobra-3.73,Offroad
Xpipe,Flowmasters,Mac Cold air,SteedaTiming Adjuster16deg,Autometer Shiftlight,NittoDragRadials,Star Stage 2 Clutch,
60ft-2.013 1/8-8.488 mph-85.170 1/4-13.123 mph-106.148

mustangbob19 · 10-14-2001, 02:13 AM

I agree also go with 4.10's for your auto. 3.73's are good for a 5 speed trans.

------------------
1990 Mustang GT 5.0
1966 Mustang 200 six
2001 Ford F-150 5.4

shoyoas · 10-17-2001, 08:37 AM

4.10's are a must!

------------------
'99 SVT Cobra #1689
Mobil 1 synthesized
Best ET 14.09@100.7
Best 60' 2.28
I'll learn how to drive this thing soon!

bstang46 · 10-19-2001, 02:03 PM

Thanks guys. I just wanted to let you know that i do already have 2 chamber flowmasters and a KN.

91LX2Bfast · 10-19-2001, 07:19 PM

You may want to think about a chip from www.customchip.com. Its a new company, but they will soon make their name as the best chip for Mustangs w/ the 4R70W. I have no affilation w/ them, I just know the work they have done, and its speaks for itself.
Its basically the same company that did my chip (impossible to explain), and it dropped my 1/4 time from 15.8@88 stock, to 15.2@91 with the chip and 80mm MAF. I now will be in the 14's w/ traction next time I go back to the track.
The stock transmission function from Ford really needs help. It shifts way to early and not hard enough. Plus they'll lock up the TC earlier (more power to the wheels through effiency), bump your timing, burn in MIL elims for an offroad pipe, and you can have a transfer function put in so you can use a 80mm or 90mm MAf from a Lightning. They change a whole lot w/ the chip, way more then I mentioned. Don't even think of an off the shelf chip like superchips or diablosport or any of them. I have been in auto mustangs w/ them and they suck.
OK, I sound like a commerical, but my chip has done so much for my car.

------------------
1997 Thunderbird 4.6L: Dynomax cat-back, MN-12 perf. offroad downtubes and Y-pipe w/ Magnaflow resonator, 80mm MAF with cone filter, B&M trans cooler, Inject-Tech chip, MAC U/D pulleys, KVR front brake upgrade. 15.2 @ 91 before exhaust & pulleys. Not bad for a 3800lb auto 4.6L

No Longer own: 91 LX 5.0L 5 spd

[This message has been edited by 91LX2Bfast (edited 10-19-2001).]

Mercury · 10-20-2001, 12:45 AM

4:10s and a higher stall convertor, and you'll be off to a real good start.

------------------
64 1/2 "D" code Red Mustang Coupe. 289, C4, Mallory duel point. Ported & Polished 65 heads shaved .01 with 351 valves, 11:1 comp, 1.7:1 rockers, blue wolverine lumpy cam, modified 4100 Hipo 4 barrel. GT Apperance pkg. And to many others to list

2000 Perf Red Mustang GT. 5spd. BBK Underdrive pulleys, Flotech off-road H pipe. Hurst T-Handle, 40 series Flowmasters, Steeda Tri-Ax. Ordered 4:10's.

64 1/2 red 6cyl coupe. Future resto.

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10-10-2001, 11:15 PM	#1
bstang46 Registered Member Join Date: Sep 2001 Location: GA Posts: 84	Gears I got a 01 GT, and i was wondering what amount of time would be gained with 4.10's and 3.73's. It is an auto too. Oh that is track time

10-11-2001, 01:27 PM	#2
DOMIN8R97 Registered Member Join Date: Aug 2001 Location: Arlington Heights, Illinois Posts: 29	Go with the 3.73's to keep your gas mileage up. I've seen them drop 3 tenths to a half second in the quarter.

10-11-2001, 11:11 PM	#3
bstang46 Registered Member Join Date: Sep 2001 Location: GA Posts: 84	Thanks for the advice!!!!!!! What other simple mods can i do to can some more time.

10-12-2001, 10:46 AM	#4
91LX2Bfast Registered Member Join Date: Dec 1999 Location: Warrington, PA Posts: 694	I am going to disagree and say go w/ 4:10's. The 4R70W is a wide ratio trans, so the gears won't have the same negative affect on gas mileage as the old AOD's. I mean, of course you will lose a few mpg over 3:27's, but do you want good acceleration or 2 extra mpg? The difference in mpg between the 3:73's and 4:10's would be so small too, its worth getting the steeper gear IMO. The only advantage I can see about getting 3:73's would be less tire spin on launch. but agian, the difference of the two gears would be minimal. ------------------ 1997 Thunderbird 4.6L: Dynomax cat-back, MN-12 perf. offroad downtubes and Y-pipe w/ Magnaflow resonator, 80mm MAF with cone filter, B&M trans cooler, Inject-Tech chip, MAC U/D pulleys, KVR front brake upgrade. 15.2 @ 91 before exhaust & pulleys. Not bad for a 3800lb auto 4.6L No Longer own: 91 LX 5.0L 5 spd

10-12-2001, 06:05 PM	#5
98SNAKE Registered Member Join Date: Apr 2001 Location: Sterling Heights,Michigan Posts: 129	I agree with 91LX2Bfast go with the 4.10's. Other mods too start off with include under drive pulleys,k&n air filter, after market cat-back system,h or x-pipe. Just too name a few. Will ------------------ 98Cobra-3.73,Offroad Xpipe,Flowmasters,Mac Cold air,SteedaTiming Adjuster16deg,Autometer Shiftlight,NittoDragRadials,Star Stage 2 Clutch, 60ft-2.013 1/8-8.488 mph-85.170 1/4-13.123 mph-106.148

10-14-2001, 02:13 AM	#6
mustangbob19 Registered Member Join Date: Sep 2000 Location: Minnesota Posts: 125	I agree also go with 4.10's for your auto. 3.73's are good for a 5 speed trans. ------------------ 1990 Mustang GT 5.0 1966 Mustang 200 six 2001 Ford F-150 5.4

10-17-2001, 08:37 AM	#7
shoyoas Registered Member Join Date: Nov 2000 Location: Detroit, MI Posts: 29	4.10's are a must! ------------------ '99 SVT Cobra #1689 Mobil 1 synthesized Best ET 14.09@100.7 Best 60' 2.28 I'll learn how to drive this thing soon!

10-19-2001, 02:03 PM	#8
bstang46 Registered Member Join Date: Sep 2001 Location: GA Posts: 84	Thanks guys. I just wanted to let you know that i do already have 2 chamber flowmasters and a KN.

10-19-2001, 07:19 PM	#9
91LX2Bfast Registered Member Join Date: Dec 1999 Location: Warrington, PA Posts: 694	You may want to think about a chip from www.customchip.com. Its a new company, but they will soon make their name as the best chip for Mustangs w/ the 4R70W. I have no affilation w/ them, I just know the work they have done, and its speaks for itself. Its basically the same company that did my chip (impossible to explain), and it dropped my 1/4 time from 15.8@88 stock, to 15.2@91 with the chip and 80mm MAF. I now will be in the 14's w/ traction next time I go back to the track. The stock transmission function from Ford really needs help. It shifts way to early and not hard enough. Plus they'll lock up the TC earlier (more power to the wheels through effiency), bump your timing, burn in MIL elims for an offroad pipe, and you can have a transfer function put in so you can use a 80mm or 90mm MAf from a Lightning. They change a whole lot w/ the chip, way more then I mentioned. Don't even think of an off the shelf chip like superchips or diablosport or any of them. I have been in auto mustangs w/ them and they suck. OK, I sound like a commerical, but my chip has done so much for my car. ------------------ 1997 Thunderbird 4.6L: Dynomax cat-back, MN-12 perf. offroad downtubes and Y-pipe w/ Magnaflow resonator, 80mm MAF with cone filter, B&M trans cooler, Inject-Tech chip, MAC U/D pulleys, KVR front brake upgrade. 15.2 @ 91 before exhaust & pulleys. Not bad for a 3800lb auto 4.6L No Longer own: 91 LX 5.0L 5 spd [This message has been edited by 91LX2Bfast (edited 10-19-2001).]

10-20-2001, 12:45 AM	#10
Mercury The Redneck James Bond Join Date: Sep 2000 Location: Fayetteville NC Posts: 1,707	4:10s and a higher stall convertor, and you'll be off to a real good start. ------------------ 64 1/2 "D" code Red Mustang Coupe. 289, C4, Mallory duel point. Ported & Polished 65 heads shaved .01 with 351 valves, 11:1 comp, 1.7:1 rockers, blue wolverine lumpy cam, modified 4100 Hipo 4 barrel. GT Apperance pkg. And to many others to list 2000 Perf Red Mustang GT. 5spd. BBK Underdrive pulleys, Flotech off-road H pipe. Hurst T-Handle, 40 series Flowmasters, Steeda Tri-Ax. Ordered 4:10's. 64 1/2 red 6cyl coupe. Future resto.