3.73 , 4.10 gears - Page 2 - MustangForums.com


4.6L (1996-2004 Modular) Mustang Technical discussions on 1996-2004 4.6 Liter Modular Motors (2V and 4V) within.

Reply
 
 
 
Thread Tools Search this Thread
Old 03-27-2012, 04:21 PM   #11
TRUEBLUE3934
4th Gear Member
 
Join Date: Sep 2009
Location: NC
Posts: 1,481
Default

I would go with 3.73 if you plan to go FI in the future.
If you want to try a shorter ratio, my next suggestion would be 3.90.

4.10 will be a lot of gear for a street car with boost.

It would be a very good idea to let a reputable performance shop do the gear install.
TRUEBLUE3934 is offline   Reply With Quote
Old 03-27-2012, 04:52 PM   #12
piledriver
Banned
 
Join Date: Aug 2006
Location: sc
Posts: 451
Default

Depending on how much power you have, 410's are no good in the 1/4 because they top out @ 108 in 4th gear, and sometimes that's just not enough. At least with 373's, 4th tops out @ around 120, a good trap speed if blown.
piledriver is offline   Reply With Quote
Old 03-27-2012, 06:12 PM   #13
tdcalhoun89
4th Gear Member
 
tdcalhoun89's Avatar
 
Join Date: Mar 2008
Location: Atlanta
Posts: 1,972
Default

Quote:
Originally Posted by TRUEBLUE3934 View Post
I would go with 3.73 if you plan to go FI in the future.
If you want to try a shorter ratio, my next suggestion would be 3.90.

4.10 will be a lot of gear for a street car with boost.

It would be a very good idea to let a reputable performance shop do the gear install.
This.
tdcalhoun89 is offline   Reply With Quote
Old 03-27-2012, 08:58 PM   #14
69MustangCoupe393cid
4th Gear Member
 
Join Date: Nov 2006
Location:
Posts: 1,227
Default

Quote:
Originally Posted by 4.6Gtconv View Post
I went 4.10's here recently.. I love them. Granted 99% of my driving is 2 miles one way, but even so its not bad.. On the highway doing 70 I was at like 2300 rpm.. its not as bad as some people portray it to be. As for gas millage you wont see any decrease around town.. you just have to shift sooner.. big deal don't be a lazy ***.. but on the highway you will probably loose 1-2 miles per gallon. And in the end you will love them. biggest Seat of the pants Ive had so far.
Like he^^ said.. Dont fear the gear.
For you guys with that .62 OD gear yeah it's not too too bad, for me with my T-45 it's quite a bit higher and is still shying me away from 4.10's. But IMO 4.10 or nothing. I wouldn't even bother with 3.73, at least in a N/A application. If you're going boosted 3.73 is plenty. But if you're really debating, go 3.90, best of both worlds.
69MustangCoupe393cid is offline   Reply With Quote
Old 03-27-2012, 09:22 PM   #15
Rockwell28
4th Gear Member
 
Rockwell28's Avatar
 
Join Date: Jun 2010
Location: TEXAS
Posts: 1,452
Default

Quote:
Originally Posted by 4.6Gtconv View Post
.. but on the highway you will probably loose 1-2 miles per gallon. .
I lost 1-2 mpg highway with 3:73s I think thats understating/selling it a bit.
Rockwell28 is offline   Reply With Quote
Old 03-27-2012, 09:26 PM   #16
Rockwell28
4th Gear Member
 
Rockwell28's Avatar
 
Join Date: Jun 2010
Location: TEXAS
Posts: 1,452
Default

Quote:
Originally Posted by TRUEBLUE3934 View Post
I would go with 3.73 if you plan to go FI in the future.
If you want to try a shorter ratio, my next suggestion would be 3.90.

4.10 will be a lot of gear for a street car with boost.

It would be a very good idea to let a reputable performance shop do the gear install.
Quote:
Originally Posted by piledriver View Post
Depending on how much power you have, 410's are no good in the 1/4 because they top out @ 108 in 4th gear, and sometimes that's just not enough. At least with 373's, 4th tops out @ around 120, a good trap speed if blown.
This(3:73s) seems to be the majority opinion on another forum also when it comes to gears and a blown car vs an n/a car.
Rockwell28 is offline   Reply With Quote
Old 03-29-2012, 12:10 AM   #17
tracyballard
2nd Gear Member
 
tracyballard's Avatar
 
Join Date: Jan 2011
Location: Texas
Posts: 268
Default

I recently went with 4.10's and overall I like the difference, but it would be a lot better with a transmission with a higher first gear, like 2.97 or so. The tremec's 3650's first gear is just way too steep to work well with the 4.10's. second and third seem well suited though. I just need more horsepower.
tracyballard is offline   Reply With Quote
Old 03-29-2012, 11:32 AM   #18
cliffyk
TECH SAVANT
 
cliffyk's Avatar
 
Join Date: Dec 2006
Location: Saint Augustine, FL
Posts: 10,924
Default

Quote:
Originally Posted by tracyballard View Post
I recently went with 4.10's and overall I like the difference, but it would be a lot better with a transmission with a higher first gear, like 2.97 or so. The tremec's 3650's first gear is just way too steep to work well with the 4.10's. second and third seem well suited though. I just need more horsepower.
This is my feeling exactly, with 3.73s. I installed them just after getting the car in Cecember '06, and before any engine mods. Now, having moved from 220/243 at the wheels to 262/305, and here in Florida where the lime rock McAdam roads are slippery as heck, I almost wish I had stayed with the 3.27s.

My next transmission will be either a TKO 600 with the 2.87 1st gear, or a rebuilt 3650 with the 2.90 1st gear offered by American Powertrain.

-------------------------------------------------
Before anyone asks, I have no (none, zero, zilch, nada) interest is a 6-speed. In any driving I do I already skip 2nd and go directly to 3rd, and when I sometimes launch in 2nd I mostly skip 3rd. I do not want to have more gears to skip in routine driving...
cliffyk is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
Possible Clutch Issues..? Thunderball 4.6L (1996-2004 Modular) Mustang 15 11-23-2015 12:49 AM
Terminated Whipple GT battles '13 GT500 on E85 Bokeo Street/Strip 6 10-10-2015 09:28 PM
What other parts should I be concerned about if my pinion bearing went bad? KingRando 2005-2014 Mustangs 5 10-02-2015 09:06 AM
So who wins uedlose The Racers Bench 4 10-01-2015 09:31 PM
Centerforce Clutch, will a exedy flywheel work? junior04 4.6L (1996-2004 Modular) Mustang 1 09-28-2015 11:53 AM


Tags
02, 2003, 2004, 373, 410, 46, 96, cobra, coilover, gears, gt, highway, mustang, shift, upr

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Forum Jump


All times are GMT -5. The time now is 01:33 AM.