Chevy guy now a Mustang owner. Gots questions...

mastershake · April 7th, 2007, 03:50 PM

After 4 Camaro's and 1 Trans Am, I bought my first Mustang, a 2003 GT, auto, with 13,500miles on it. Got a hell of a deal. Using it as a daily driver, and for weekend cruizing. So... stuff id like to know:

What are the tranny gear ratios? First gear seems to go to like 41mph or so. Not much punch off the line there.

What is the rear gear ratio?

Will cut outs after the cats sound decent. Not asking if it will be loud, but if it will still sound decent, not like an old truck with a rusted-through muffler.

What kind of gains can I expect from dyno tuning? A guy who does it around here owes me.

And lastly, are there any trouble spots on the 03's I should watch for?

Please dont tell me to do the search. Already searched a little and didnt find my answers.

Drgnracin72 · April 7th, 2007, 04:01 PM

im not for sure on the tranny gears, but the ring and pinion are 3.27 i believe. best bang for the buck mod is some 4.10 gears.

cutouts on these cars do not sound good and wont pick you up anypower.

dyno tuning on a stock motor can pic yo up 10-15 hp

no trouble spots for your car.

02steedagt · April 7th, 2007, 04:33 PM

yes the rear end stock gear is 3.27.

if you don't want really loud exhaust, but something that sounds really good (all mustangs sound good!), get yourself a high-flow catted h-pipe and a nice cat-back system. happy gains, and VERY happy sound.

if I was you, i would wait on that dyno tune until you've got some more mods so that you will gain more out of the tune... it'll be more worth it.

Timber · April 7th, 2007, 04:55 PM

TR-3650 used in 2001-present Ford Mustang GT's
1st: 3.380 :1
2nd: 2.000 :1
3rd: 1.320 :1
4th: 1.000 :1
5th: 0.620 :1

mastershake · April 7th, 2007, 05:42 PM

Originally Posted by Timber

TR-3650 used in 2001-present Ford Mustang GT's
1st: 3.380 :1
2nd: 2.000 :1
3rd: 1.320 :1
4th: 1.000 :1
5th: 0.620 :1

Mine has the 4spd auto.

Timber · April 7th, 2007, 06:36 PM

Originally Posted by mastershake

Originally Posted by Timber

TR-3650 used in 2001-present Ford Mustang GT's
1st: 3.380 :1
2nd: 2.000 :1
3rd: 1.320 :1
4th: 1.000 :1
5th: 0.620 :1

Mine has the 4spd auto.

Duh. My bad, you did say that.

4R70W 2.84 1.55 1.00 0.70

Welcome to the Mustang forum of Chevy fans.

mastershake · April 7th, 2007, 07:55 PM

At the 1/4mile track here, I see the 99-04 gt's usualy running mid-high14's (its not the best track though)

Whats usualy the norm for a stock gt with automatic tranny?

Garhfer · April 7th, 2007, 07:59 PM

I would say probably mid 14's since standards run high 13's to low 14's

WAR-PARTY · April 8th, 2007, 12:01 AM

welcome to the Dark Side... OK now now your a FORD guy. Me too, after 25 years as a Chevy guy. Ya Fords are strange but can and will put out the HP.
W.P>

neckbonekat · April 8th, 2007, 02:35 AM

Originally Posted by 02steedagt

yes the rear end stock gear is 3.27.

if you don't want really loud exhaust, but something that sounds really good (all mustangs sound good!), get yourself a high-flow catted h-pipe and a nice cat-back system. happy gains, and VERY happy sound.

if I was you, i would wait on that dyno tune until you've got some more mods so that you will gain more out of the tune... it'll be more worth it.

+1

commpartspro · April 10th, 2007, 10:39 AM

nice to have ya!!!

WilltheThrill · April 10th, 2007, 12:32 PM

Originally Posted by mastershake

At the 1/4mile track here, I see the 99-04 gt's usualy running mid-high14's (its not the best track though)

Whats usualy the norm for a stock gt with automatic tranny?

The norm should be low 14's with good tires. I had a 04 gt before the cobra and my best ET was a 14.2

mastershake · April 10th, 2007, 06:33 PM

I prolly wont have a 1/4mile time till I go to Norwalk this summer, but Ill get plenty of 1/8mile slips in a couple weeks. Now Im tryin to decide what to do for an exhaust, cuz thats prolly gonna be my only mod this year, other than the free dyno tune.

orangeRcode · April 10th, 2007, 06:48 PM

Welcome to MM. Enjoy your automagic.

Timber · April 10th, 2007, 07:43 PM

Originally Posted by mastershake

I prolly wont have a 1/4mile time till I go to Norwalk this summer, but Ill get plenty of 1/8mile slips in a couple weeks. Now Im tryin to decide what to do for an exhaust, cuz thats prolly gonna be my only mod this year, other than the free dyno tune.

youtube is your friend there. You can probably find a vid of any muffler you might want.

neckbonekat · April 11th, 2007, 02:18 AM

Originally Posted by Timber

Originally Posted by mastershake

I prolly wont have a 1/4mile time till I go to Norwalk this summer, but Ill get plenty of 1/8mile slips in a couple weeks. Now Im tryin to decide what to do for an exhaust, cuz thats prolly gonna be my only mod this year, other than the free dyno tune.

youtube is your friend there. You can probably find a vid of any muffler you might want.

Just be carful choosing a exhaust off sound clips. You don't want to buy an exhaust because one guy has a better camcorder than another. Best thing to do is go to car meets and ask people questions about thier set ups.

April 7th, 2007, 03:50 PM	#1
mastershake Regular 2003 Mustang GT 12.61@108 Join Date: Apr 2007 Location: Youngstown,Ohio Posts: 230 iTrader: 0 reviews	Chevy guy now a Mustang owner. Gots questions... After 4 Camaro's and 1 Trans Am, I bought my first Mustang, a 2003 GT, auto, with 13,500miles on it. Got a hell of a deal. Using it as a daily driver, and for weekend cruizing. So... stuff id like to know: What are the tranny gear ratios? First gear seems to go to like 41mph or so. Not much punch off the line there. What is the rear gear ratio? Will cut outs after the cats sound decent. Not asking if it will be loud, but if it will still sound decent, not like an old truck with a rusted-through muffler. What kind of gains can I expect from dyno tuning? A guy who does it around here owes me. And lastly, are there any trouble spots on the 03's I should watch for? Please dont tell me to do the search. Already searched a little and didnt find my answers.

April 7th, 2007, 04:01 PM	#2
Drgnracin72 I Post Entirely Way Too Much Join Date: Jan 2006 Location: somewhere in oklahoma Posts: 10,638 iTrader: 2 reviews	im not for sure on the tranny gears, but the ring and pinion are 3.27 i believe. best bang for the buck mod is some 4.10 gears. cutouts on these cars do not sound good and wont pick you up anypower. dyno tuning on a stock motor can pic yo up 10-15 hp no trouble spots for your car. __________________ RIP ΜΟΛΩΝ ΛΑΒΕ Political Correctness is a doctrine, fostered by a delusional, illogical, liberal minority and rabidly promoted by an unscrupulous mainstream media, which holds forth the proposition that it is entirely possible to pick up a turd by the clean end. One Big Ass Mistake America SHEEPDOGS

April 7th, 2007, 04:33 PM	#3
02steedagt Enthusiast Join Date: Jan 2007 Location: Solomons, MD Posts: 634 iTrader: 0 reviews	yes the rear end stock gear is 3.27. if you don't want really loud exhaust, but something that sounds really good (all mustangs sound good!), get yourself a high-flow catted h-pipe and a nice cat-back system. happy gains, and VERY happy sound. if I was you, i would wait on that dyno tune until you've got some more mods so that you will gain more out of the tune... it'll be more worth it. __________________ "America is all about speed. Hot, nasty, bad ass speed." Eleanor Roosevelt, 1936

April 7th, 2007, 04:55 PM	#4
Timber Enthusiast Join Date: Dec 2006 Location: No point mentioning those bats... Posts: 867 iTrader: 0 reviews	TR-3650 used in 2001-present Ford Mustang GT's 1st: 3.380 :1 2nd: 2.000 :1 3rd: 1.320 :1 4th: 1.000 :1 5th: 0.620 :1 __________________

April 8th, 2007, 12:01 AM	#9
WAR-PARTY Hardcore Enthusiast 2001 YUGO GT Join Date: Aug 2006 Location: GOAT LOCKER PENSACOLA FL Posts: 1,701 Blog Entries: 1 iTrader: 0 reviews	welcome to the Dark Side... OK now now your a FORD guy. Me too, after 25 years as a Chevy guy. Ya Fords are strange but can and will put out the HP. W.P> __________________ How I met my wife! Our first date...

April 7th, 2007, 07:55 PM	#7
mastershake Regular 2003 Mustang GT 12.61@108 Join Date: Apr 2007 Location: Youngstown,Ohio Posts: 230 iTrader: 0 reviews	At the 1/4mile track here, I see the 99-04 gt's usualy running mid-high14's (its not the best track though) Whats usualy the norm for a stock gt with automatic tranny?

April 7th, 2007, 07:59 PM	#8
Garhfer Hardcore Enthusiast 2004 Mustang GT Conv. Join Date: Mar 2007 Location: Edgewater, FL Posts: 1,790 iTrader: 0 reviews	I would say probably mid 14's since standards run high 13's to low 14's

April 10th, 2007, 10:39 AM	#11
commpartspro Newbie Join Date: Mar 2007 Posts: 35 iTrader: 0 reviews	nice to have ya!!! __________________ 04 mach 1

April 10th, 2007, 06:33 PM	#13
mastershake Regular 2003 Mustang GT 12.61@108 Join Date: Apr 2007 Location: Youngstown,Ohio Posts: 230 iTrader: 0 reviews	I prolly wont have a 1/4mile time till I go to Norwalk this summer, but Ill get plenty of 1/8mile slips in a couple weeks. Now Im tryin to decide what to do for an exhaust, cuz thats prolly gonna be my only mod this year, other than the free dyno tune.

April 10th, 2007, 06:48 PM	#14
orangeRcode Hardcore Enthusiast 11.21@123 -150 shot Join Date: May 2006 Location: Mustang/Yukon, OK Posts: 1,830 iTrader: 1 reviews	Welcome to MM. Enjoy your automagic. __________________

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