hypothetical gear question

89Domindart · August 3rd, 2009, 03:37 AM

Heres a question for you gear head nut boyz and girlz.

Lets say you have a car thats mainly stock 2.73 gears, and you want to up the gear ratio, but you want something that will run good on highway cruises to car shows or weekend getaways.

What would you opt for, 3.55 or 3.73?

Would 3.55 put me at a large loss on the streets?

Sorry yes another gear question, Im debating still over these two and I felt like posting, so deal with it LOL

jessemachone · August 3rd, 2009, 04:02 AM

I have been debating the very same thing between 4:10 and 3:73. I am pretty sure I will be going with 4:10 and running a tall tire to fill out the fender well.

On a side note, i recently changed whole rear ends from 3:08 to 2:73 because of the condition that the 3:08 rear was in. The swap cost me nothing as I had the rear from a parts car. I am enjoying the new gears as they are great for cruising on the highway.

So, in response to your question, go with the 3:73's. If you dont like how high it revs, put a tall tire on.

here is a tool for you to check out:
Ford Mustang: Mustang Tech: Calculators & Decoders: RPM Calculator

check this out too:
Mustang Performance Handbook: Engine ... - Google Books

89Domindart · August 3rd, 2009, 04:05 AM

Yap, 2.73 is a highway monster gear.

Thats why Im thinking going to a 3.55 will be enough for me, but then I thought, will everyone else be running higher??!! lol

jessemachone · August 3rd, 2009, 04:08 AM

I actually think 3:73 is the best all around but I want a big tire so I am going to run a 4:10 to make up for it.

93hatch · August 3rd, 2009, 04:09 AM

3.55s are gay dude, if the speedlimits there are 65 like here then get 4.10s

89Domindart · August 3rd, 2009, 04:12 AM

LOL^^^^^ ya maybe your right.

1slo5.0 · August 3rd, 2009, 12:32 PM

Originally Posted by 89Domindart

Heres a question for you gear head nut boyz and girlz.

Lets say you have a car thats mainly stock 2.73 gears, and you want to up the gear ratio, but you want something that will run good on highway cruises to car shows or weekend getaways.

What would you opt for, 3.55 or 3.73?

Would 3.55 put me at a large loss on the streets?

Sorry yes another gear question, Im debating still over these two and I felt like posting, so deal with it LOL

3.73 all the way. I got 25mpg on the highway with a 306 that made 331rwhp and ran 11.50s. Does that answer your question?

M L Struck · August 3rd, 2009, 12:53 PM

Originally Posted by 1slo5.0

3.73 all the way. I got 25mpg on the highway with a 306 that made 331rwhp and ran 11.50s. Does that answer your question?

I'm with Darrel, my 85 GT with carb and 3.73's got 24 mpg all the way to Daytona beach and ran 12.60 at moroso and got 24 mpg on the way home.with 4of us and the stereo jammin for 16 hours straight. A/C on

superbean · August 3rd, 2009, 02:42 PM

I like my 3.73s.. 4.10s are a little much for your setup.

flattusmaximus78 · August 3rd, 2009, 03:28 PM

I have 3:55s. I hate them.

93hatch · August 3rd, 2009, 03:29 PM

i gave sean my 3.55s outa my mach for helping me with my ac line so if you wana buy them for some reason message him

JBIGBOOTSY · August 3rd, 2009, 05:48 PM

I hate my 3.55's the cost me some 60", but word on the street is turbos like em.

89Domindart · August 4th, 2009, 02:42 AM

Im thinking 3.73 now, and I may have a killer deal coming my way, well see.

86_Notch · August 4th, 2009, 10:41 PM

another vote for 373s here

89Domindart · August 5th, 2009, 05:46 AM

Ya, Im deciding on 373 now.

M L Struck · August 5th, 2009, 08:13 AM

very,very, smart man, you will love them

Chris951 · August 5th, 2009, 12:26 PM

4.10's or bust dude. It will feel like a different car. You'll love the boost in acceleration. It's a 5-speed? Mine is and I have 4.10's and I run about 2600rpms at 65-70. Don't know for sure because my speedo doesn't work but I stay with traffic at 2600. My last fox had 3.27's and it was cool on the highway but felt like a dog on the streets. 2300rpms was like 95 instead of 60 with 4.10's haha

black5.0 · August 5th, 2009, 12:29 PM

3.73

1slo5.0 · August 5th, 2009, 12:53 PM

Originally Posted by Chris951

4.10's or bust dude. It will feel like a different car. You'll love the boost in acceleration. It's a 5-speed? Mine is and I have 4.10's and I run about 2600rpms at 65-70. Don't know for sure because my speedo doesn't work but I stay with traffic at 2600. My last fox had 3.27's and it was cool on the highway but felt like a dog on the streets. 2300rpms was like 95 instead of 60 with 4.10's haha

Have you made a comparison between 4.10s and 3.73s? If not then I wouldn't be saying 4.10s or bust. I switched from 3.73s to 4.10s in a car that ran mid 11s and it gained a tenth in the 1/4 but lost a few mpg across the board. I'd stick with a 3.73 gear.

sniperd · August 5th, 2009, 05:56 PM

Originally Posted by 1slo5.0

I'd stick with a 3.73 gear.

Would you run them in a turbo car also? What did you run in your 9 second car?

August 3rd, 2009, 03:37 AM	#1
89Domindart Enthusiast 89mustanglx5.0 Join Date: Jul 2006 Location: smyrna ga Posts: 791 Blog Entries: 4 iTrader: 0 reviews	hypothetical gear question Heres a question for you gear head nut boyz and girlz. Lets say you have a car thats mainly stock 2.73 gears, and you want to up the gear ratio, but you want something that will run good on highway cruises to car shows or weekend getaways. What would you opt for, 3.55 or 3.73? Would 3.55 put me at a large loss on the streets? Sorry yes another gear question, Im debating still over these two and I felt like posting, so deal with it LOL __________________ 89 5.0 for sale! in the classifieds section

August 3rd, 2009, 04:02 AM	#2
jessemachone The Big Spoon 88 5.0 5 Speed Notch <>< never fast enough Join Date: Mar 2008 Location: PHL -> PHX Posts: 2,999 iTrader: 0 reviews	I have been debating the very same thing between 4:10 and 3:73. I am pretty sure I will be going with 4:10 and running a tall tire to fill out the fender well. On a side note, i recently changed whole rear ends from 3:08 to 2:73 because of the condition that the 3:08 rear was in. The swap cost me nothing as I had the rear from a parts car. I am enjoying the new gears as they are great for cruising on the highway. So, in response to your question, go with the 3:73's. If you dont like how high it revs, put a tall tire on. here is a tool for you to check out: Ford Mustang: Mustang Tech: Calculators & Decoders: RPM Calculator check this out too: Mustang Performance Handbook: Engine ... - Google Books Last edited by jessemachone; August 3rd, 2009 at 04:06 AM. Reason: addition

August 3rd, 2009, 04:05 AM	#3
89Domindart Enthusiast 89mustanglx5.0 Join Date: Jul 2006 Location: smyrna ga Posts: 791 Blog Entries: 4 iTrader: 0 reviews	Yap, 2.73 is a highway monster gear. Thats why Im thinking going to a 3.55 will be enough for me, but then I thought, will everyone else be running higher??!! lol __________________ 89 5.0 for sale! in the classifieds section

August 3rd, 2009, 04:09 AM	#5
93hatch Banned 1992 Lx 11.39@119.24 Join Date: Jan 2008 Location: Az Posts: 11,665 iTrader: 0 reviews	3.55s are gay dude, if the speedlimits there are 65 like here then get 4.10s __________________ [QUOTE=93mustank;2577445]We speed tested my right arm for quickness in shifts... So he could design the cam for proper shift recovery.[/QUOTE]

August 3rd, 2009, 04:12 AM	#6
89Domindart Enthusiast 89mustanglx5.0 Join Date: Jul 2006 Location: smyrna ga Posts: 791 Blog Entries: 4 iTrader: 0 reviews	LOL^^^^^ ya maybe your right. __________________ 89 5.0 for sale! in the classifieds section

August 3rd, 2009, 04:08 AM	#4
jessemachone The Big Spoon 88 5.0 5 Speed Notch <>< never fast enough Join Date: Mar 2008 Location: PHL -> PHX Posts: 2,999 iTrader: 0 reviews	I actually think 3:73 is the best all around but I want a big tire so I am going to run a 4:10 to make up for it.

August 3rd, 2009, 02:42 PM	#9
superbean Hardcore Enthusiast 1998 Cobra 13.24@105.66 Join Date: Aug 2008 Location: North Carolina Posts: 1,778 iTrader: 0 reviews	I like my 3.73s.. 4.10s are a little much for your setup. __________________ weeee foooord!

August 3rd, 2009, 03:28 PM	#10
flattusmaximus78 I Post Entirely Way Too Much 1993 5.ohhhh 12.97 @140mph Join Date: Apr 2006 Location: Gatorland Posts: 6,077 iTrader: 3 reviews	I have 3:55s. I hate them. __________________ 02 Pewter z28, hoosiers/lid/exhaust/spray...125mph 1993 gt Sold, already missed --Moates Quarter horse $225-- --Cobra intake $150-- --tremec 3550 bell and shifter $1100--

August 3rd, 2009, 03:29 PM	#11
93hatch Banned 1992 Lx 11.39@119.24 Join Date: Jan 2008 Location: Az Posts: 11,665 iTrader: 0 reviews	i gave sean my 3.55s outa my mach for helping me with my ac line so if you wana buy them for some reason message him __________________ [QUOTE=93mustank;2577445]We speed tested my right arm for quickness in shifts... So he could design the cam for proper shift recovery.[/QUOTE]

August 3rd, 2009, 05:48 PM	#12
JBIGBOOTSY MM Fanatic 1990 LX hatch Join Date: Aug 2006 Location: Hobart Indiana Posts: 4,392 iTrader: 0 reviews	I hate my 3.55's the cost me some 60", but word on the street is turbos like em. __________________ Bolt-on Abraham Lincoln Log motor. With extra wiring.

August 4th, 2009, 02:42 AM	#13
89Domindart Enthusiast 89mustanglx5.0 Join Date: Jul 2006 Location: smyrna ga Posts: 791 Blog Entries: 4 iTrader: 0 reviews	Im thinking 3.73 now, and I may have a killer deal coming my way, well see. __________________ 89 5.0 for sale! in the classifieds section

August 4th, 2009, 10:41 PM	#14
86_Notch Hardcore Enthusiast 1986 lx notch 9.98 @ 135 Join Date: Mar 2007 Location: Delaware Posts: 1,421 iTrader: 0 reviews	another vote for 373s here __________________ " Spending money I don't have.... on things I don't need .... to impress people I don't know " .

August 5th, 2009, 05:46 AM	#15
89Domindart Enthusiast 89mustanglx5.0 Join Date: Jul 2006 Location: smyrna ga Posts: 791 Blog Entries: 4 iTrader: 0 reviews	Ya, Im deciding on 373 now. __________________ 89 5.0 for sale! in the classifieds section

August 5th, 2009, 08:13 AM	#16
M L Struck Hardcore Enthusiast 85 GT/86 SVO/2010 GT500 Join Date: Oct 2008 Location: Rossville IN Posts: 1,183 iTrader: 0 reviews	very,very, smart man, you will love them __________________ "Having a 9 second neon is like coming out of the closet, everyone is shocked at first, but in the end you're still gay." 5.4 Shelby Crew member #1

August 5th, 2009, 12:26 PM	#17
Chris951 Hardcore Enthusiast 1991 mustang 5.0 Join Date: Aug 2007 Location: Mesa, AZ Posts: 1,933 iTrader: 0 reviews	4.10's or bust dude. It will feel like a different car. You'll love the boost in acceleration. It's a 5-speed? Mine is and I have 4.10's and I run about 2600rpms at 65-70. Don't know for sure because my speedo doesn't work but I stay with traffic at 2600. My last fox had 3.27's and it was cool on the highway but felt like a dog on the streets. 2300rpms was like 95 instead of 60 with 4.10's haha Last edited by Chris951; August 5th, 2009 at 12:28 PM.

August 5th, 2009, 12:29 PM	#18
black5.0 Enthusiast 90 mustang notchback Join Date: Jul 2008 Location: Oklahoma Posts: 503 iTrader: 0 reviews	3.73 __________________ 306 Turbo Notch D&G Tuned

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