3:73 or 4:10

[Thunderstang00]

i have a 2000 v6 mustang automatic, and i was wondering what the differience between 3:73s and 4:10s . also if i get them which one would you guys prefer getting. thx

[dampachi]

4.10s are more aggressive. I'm getting 4.10s for my GT...but I have no idea how good they'd be on a V6.

[DanF]

The 3.72 would be better for daily type driving the 4.10 are more agressive for a more track/racing car. If you still want to consider fuel economy I say go with the 3.73's but if you just want all out acceleration the 4.10s are the way to go...

[stang_00]

i am getting 3.73's for my mustang ... i drive too many highway miles for 4.10

[dampachi]

Everyone I ever met who had 3.73s on a GT wished they had gone with 4.10s. 4.10s aren't that bad on the highway. I mean it's maybe like..1mpg difference. Unless you cruise down the highway at 90mph in fourth gear....

[duplox]

I mainly visit forums with old school mustang/cougar/fairlane etc people, 60's and 70's, most have 3 speed autos or 4 speed manuals - no overdrive here. Most run at least 3.73 gears, and they get by. I'd go no less than 4.10 on an overdrive trans.

[stang_00]

what rpm's would i run with a 4 speed auto and 4.10 gears at say 75 or 80?... i have a v6

[SMOKEY818]

yeah i would definetly go with 4.10 but i wouldnt put them in a v6

[TheStang00]

well..... we are talking about a v6 here

[duplox]

Whats the difference if its a v6 or v8? I'd be more inclined to use higher ratio gears on a V6... less power means it needs all the torque multiplication it can get.

http://www.onlineconversion.com/bigger_tires.htm
I believe an AOD has a .68 ratio top gear. With a 26" tire, that puts you at around 3000rpm(with a little converter slip fudge factor in there) at 80mph. Not bad at all!

[GTStang]

Originally Posted by dampachi

Everyone I ever met who had 3.73s on a GT wished they had gone with 4.10s. 4.10s aren't that bad on the highway. I mean it's maybe like..1mpg difference. Unless you cruise down the highway at 90mph in fourth gear....

I have had 4.10's on my 83 and 3.73's on my other 2 stangs and I like 3.73's better for my everyday driver by far. So there you go one person you meant who doesn't want 4.10's

What is and is not acceptable as far as gas mileage, rpm at highway speeds, etc.., is purely subjective, so to each their own. Also a 4.10 7.5" ring and pinion gear is not very physically strong, could be an issue later on. Also if you have plans on making a good amount more hp/torque your gonna toss your 4.10's off for 3.73's/3.55's real quick unless it's dedictaed track car.

[stang_00]

or if you really want a 4.10 and you dont want problems upgrade to an 8.8" rearend

[Future303]

I've decided to stick to my 2.73's and just make up the difference in HP and Torque

[dampachi]

For a naturally aspirated 99+ GT...4.10s are the only way to go. But..if you're supercharged/going to be then you'll probably wanna stick with them 3.27s or at most go with 3.55s. Unless you know how to launch...

[silverstangs]

Originally Posted by dampachi

For a naturally aspirated 99+ GT...4.10s are the only way to go. But..if you're supercharged/going to be then you'll probably wanna stick with them 3.27s or at most go with 3.55s. Unless you know how to launch...

I didn't like the 4:10's it made 1st gear useless.


I prefer 3:73's or 3:90's, but I have had every gear under the sun it seems like

4:10,s 3:90's, 3:73's, 3:55's 3:43(on my V6) and 3:27's.



I currently went back to 3:55's but I think I'm gonna go back to the 3:73's. That seems to be the gear I am most happy with.