3.73's

02steedagt · March 27th, 2007, 10:58 AM

hey all i was just wondering.... i did a little experiment yesterday and i only got to like 112 in 4th gear. Is this right? or is my speedo still off?

White99stang · March 27th, 2007, 11:16 AM

speedo got to be off, i have 4.30's and at the top end of the track with a 26inch tire i top out at 117. And with a 28inch tall tire i top out at 125.
So yeah your speedo is off, top in 4th for you should be around 128 or 130

02steedagt · March 27th, 2007, 11:17 AM

oh and one more ??

a guy told me that my half second 1/4 mile time drop was due to the CAI and tuner, not the gears???

is this true? i figured it was a combination of all of them.

White99stang · March 27th, 2007, 11:32 AM

it was mainly the gears trust me. a cai and tuner maybe added 20rwhp and that will not make you drop half a second but getting your car to stay more in its powerband with steeper gears will. Imagine if you have put 4.30's or 4.56's, you might of dropped a whole second

MySallyMI · March 27th, 2007, 01:57 PM

i got 4.10's and tha where i shift when im in 4th, but i run up to 6k RPM's

acmillr · March 27th, 2007, 02:12 PM

With 3.73's, you should hit about 130-135 in 4th gear. Trust me on this. Maybe you're tuned for 4.73's LOL.

Ryno · March 27th, 2007, 06:39 PM

there has been a link to a speed calculator posted somewhere, that might tell you where 4th should top out at

BULLITT00244 · March 27th, 2007, 09:08 PM

hey one of my friends just told me that if i order 4.10's for my car then my car will max top out at about 110mph. is this true?

Timber · March 27th, 2007, 09:15 PM

Originally Posted by BULLITT00244

hey one of my friends just told me that if i order 4.10's for my car then my car will max top out at about 110mph. is this true?

No.

the real shocker · March 27th, 2007, 09:15 PM

Originally Posted by BULLITT00244

hey one of my friends just told me that if i order 4.10's for my car then my car will max top out at about 110mph. is this true?

absolutely not

i havent topped mine out with my 4.10's but i have seen 135 with a little more rpms to play with

BULLITT00244 · March 27th, 2007, 09:17 PM

lol nice. he also said that 1rst gear will be worthless and i would always start from 2nd. wat u think of that?

Timber · March 27th, 2007, 09:25 PM

Originally Posted by BULLITT00244

lol nice. he also said that 1rst gear will be worthless and i would always start from 2nd. wat u think of that?

Well... worthless is an opinion but you may find yourself starting from second if you have the slightest roll going.

You'll drop from about 40 mph at redline in first to 30 mph with 4.10's.

the real shocker · March 27th, 2007, 09:48 PM

Originally Posted by Timber

you may find yourself starting from second if you have the slightest roll going.

+1.... first gear is not worthless, but you can start in 2nd a lot easier than you can with stock gears... you can actually dump the clutch and do a wild smokey burnout in 2nd, although repeatedly doing that may not be the best for your car

Drgnracin72 · March 27th, 2007, 09:51 PM

im running 3.73 and in 4th at 6500 rpms it is right at 120 and that was verified on a mustang dyno

the real shocker · March 27th, 2007, 09:53 PM

thats sounds right...i have my rev limiter set at 6250 and its usually around 110-115(im not really concentrating on the speedo at this point) when im approaching the dangazone in 4th

BULLITT00244 · March 27th, 2007, 11:03 PM

wats the best brand gears that i should get or does it not matter?

02steedagt · March 27th, 2007, 11:11 PM

thanks for the info guys....

buy FRPP's

Timber · March 28th, 2007, 08:41 AM

http://www.tchracing.com/tech/gearca...selectedgear=4

Garhfer · March 28th, 2007, 08:51 PM

I think that chart's off it says

Your tire's diameter is 26.921 inches
At 6000 RPM in 5th gear, you're moving at 189.041 MPH

for 315's?? with 4.10 gears? lol I doubt I could make anymore than 150 with 4.10's

MustangMatt96GT · March 28th, 2007, 08:57 PM

If you were in a vacuum without any air resistance or anything then it could happen, but in the real world there is air resistance and friction from the tires and the pavement so that is why there is a difference. Also to think about with that chart is friction is not in there, making the acutal speed slightly slower! But it gives a good estimate.

March 27th, 2007, 10:58 AM	#1
02steedagt Enthusiast Join Date: Jan 2007 Location: Solomons, MD Posts: 634 iTrader: 0 reviews	3.73's hey all i was just wondering.... i did a little experiment yesterday and i only got to like 112 in 4th gear. Is this right? or is my speedo still off? __________________ "America is all about speed. Hot, nasty, bad ass speed." Eleanor Roosevelt, 1936

March 27th, 2007, 11:16 AM	#2
White99stang MM's nicest mod, :) Join Date: Aug 2005 Location: Apex, NC Posts: 3,718 iTrader: 0 reviews	speedo got to be off, i have 4.30's and at the top end of the track with a 26inch tire i top out at 117. And with a 28inch tall tire i top out at 125. So yeah your speedo is off, top in 4th for you should be around 128 or 130 __________________ 06 Dodge MegaCab Diesel 455rwhp/815rwtq REAL TRUCKS DON'T USE SPARK PLUGS

March 27th, 2007, 11:17 AM	#3
02steedagt Enthusiast Join Date: Jan 2007 Location: Solomons, MD Posts: 634 iTrader: 0 reviews	oh and one more ?? a guy told me that my half second 1/4 mile time drop was due to the CAI and tuner, not the gears??? is this true? i figured it was a combination of all of them. __________________ "America is all about speed. Hot, nasty, bad ass speed." Eleanor Roosevelt, 1936

March 27th, 2007, 11:32 AM	#4
White99stang MM's nicest mod, :) Join Date: Aug 2005 Location: Apex, NC Posts: 3,718 iTrader: 0 reviews	it was mainly the gears trust me. a cai and tuner maybe added 20rwhp and that will not make you drop half a second but getting your car to stay more in its powerband with steeper gears will. Imagine if you have put 4.30's or 4.56's, you might of dropped a whole second __________________ 06 Dodge MegaCab Diesel 455rwhp/815rwtq REAL TRUCKS DON'T USE SPARK PLUGS

March 27th, 2007, 01:57 PM	#5
MySallyMI Regular Join Date: Jul 2006 Location: Grand Rapids,MI-Ft.Hood,TX Posts: 253 iTrader: 0 reviews	Re: 3.73's i got 4.10's and tha where i shift when im in 4th, but i run up to 6k RPM's

March 27th, 2007, 02:12 PM	#6
acmillr MM's Mad Scientist Slow Fella Join Date: Jul 2006 Location: Tupelo, MS Posts: 5,120 iTrader: 2 reviews	With 3.73's, you should hit about 130-135 in 4th gear. Trust me on this. Maybe you're tuned for 4.73's LOL. __________________

March 27th, 2007, 06:39 PM	#7
Ryno Regular Join Date: Jan 2007 Posts: 121 iTrader: 0 reviews	there has been a link to a speed calculator posted somewhere, that might tell you where 4th should top out at __________________ Ryno www.myspace.com/ryno5700

March 27th, 2007, 09:08 PM	#8
BULLITT00244 Newbie Join Date: Mar 2007 Posts: 12 iTrader: 0 reviews	hey one of my friends just told me that if i order 4.10's for my car then my car will max top out at about 110mph. is this true?

March 27th, 2007, 09:17 PM	#11
BULLITT00244 Newbie Join Date: Mar 2007 Posts: 12 iTrader: 0 reviews	lol nice. he also said that 1rst gear will be worthless and i would always start from 2nd. wat u think of that?

March 27th, 2007, 09:51 PM	#14
Drgnracin72 I Post Entirely Way Too Much Join Date: Jan 2006 Location: somewhere in oklahoma Posts: 10,638 iTrader: 2 reviews	im running 3.73 and in 4th at 6500 rpms it is right at 120 and that was verified on a mustang dyno __________________ 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

March 27th, 2007, 09:53 PM	#15
the real shocker Hardcore Enthusiast 2002 Mustang GT 13.00 @ 105 Join Date: Feb 2007 Location: Jackson, MS Posts: 1,820 iTrader: 1 reviews	thats sounds right...i have my rev limiter set at 6250 and its usually around 110-115(im not really concentrating on the speedo at this point) when im approaching the dangazone in 4th __________________

March 27th, 2007, 11:03 PM	#16
BULLITT00244 Newbie Join Date: Mar 2007 Posts: 12 iTrader: 0 reviews	wats the best brand gears that i should get or does it not matter?

March 27th, 2007, 11:11 PM	#17
02steedagt Enthusiast Join Date: Jan 2007 Location: Solomons, MD Posts: 634 iTrader: 0 reviews	thanks for the info guys.... buy FRPP's __________________ "America is all about speed. Hot, nasty, bad ass speed." Eleanor Roosevelt, 1936

March 28th, 2007, 08:41 AM	#18
Timber Enthusiast Join Date: Dec 2006 Location: No point mentioning those bats... Posts: 867 iTrader: 0 reviews	http://www.tchracing.com/tech/gearca...selectedgear=4 __________________

March 28th, 2007, 08:51 PM	#19
Garhfer Hardcore Enthusiast 2004 Mustang GT Conv. Join Date: Mar 2007 Location: Edgewater, FL Posts: 1,790 iTrader: 0 reviews	I think that chart's off it says Your tire's diameter is 26.921 inches At 6000 RPM in 5th gear, you're moving at 189.041 MPH for 315's?? with 4.10 gears? lol I doubt I could make anymore than 150 with 4.10's

March 28th, 2007, 08:57 PM	#20
MustangMatt96GT Proud American 1996 Mustang GT 10.76 @ 122 with d/a of 8365 ft Join Date: Dec 2006 Location: Lakewood, CO Posts: 10,168 iTrader: 3 reviews	If you were in a vacuum without any air resistance or anything then it could happen, but in the real world there is air resistance and friction from the tires and the pavement so that is why there is a difference. Also to think about with that chart is friction is not in there, making the acutal speed slightly slower! But it gives a good estimate. __________________ RIP Travis Billings Special Thanks to: Andrews Racing Transmissions Baseline Suspensions Blown Small Block Ford with a hole in the block. 9.5 Dart Block 400 CI being saved for. Just because you can fuck a cactus doesn't mean you should. Never Lift Racecars

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3.73's

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