New rear gears
 

I'm thinking I want to get new gears for a little more get-up and go. I'm thinking 3.73s would be good. Right now I turn about 1600-1700 RPMs at highway speeds. How much of a jump will 3.73s bring at highway speeds?
Anyone have 3.73s? Do you like them?

Also, does it matter what brand I go with, cause I want quality gears but don't want to lighten the wallet too much.

I did 3.73's,and they lasted me a season,then i went to 4.10's,and been happy since.
The 4.6 needs the 4.10,3.73's i thought personnally weren't enough (as many others who have done both aswell.....do a web wide search on modular sites :wink:).
They have no bottm end torque,so the gear is what makes up that difference.:tup
Stick with Ford Racing gears.:)

I was kinda thinking of Ford Racing gears. This is for my daily, did you notice gas mileage changes when you went from 3.73s to 4.10s?

I found a good speed/RPM calculator Click Here

I'd also suggest 4:10's and frpp ones, lots of others seem to be noisy. What are your gears right now? I think there is no point if you don't make ATLEAST 2 jumps. IE 3:55 to 3:73 = pointless. 3:55 to 3:93 atleast. BUT it seems 3:93's tend to be noisy too. I guarantee you will LOVE 4:10's for the improved fun factor, especially if you have 3:55's or less now. Your gas mileage will of course go down but I think the main reason most people get the drops they do is because it's so much more fun down low they are stomping on it more. :laughhard It depends how much highway driving you do too. If you mostly just put around town I wouldn't hesitate as you can still keep the rpms really low. If you do tons of highway driving you will definently notice the difference. For me it's not bad if I keep her at 110-120k. (i can still get 25mpg with all my crap)

I got 3.73's in a 94 5.0L but since im kickin over 500 whp I should have went with 3.55's
Since your 4.6 you will wanna either do 3.73's or 4.10's

4.10'S FTW!!! :chacha::laughhard:tup

To tell you the truth,and it might sound nuts,but i get better miliage.She is not working as hard. :)

If you had a pushrod motor like a 5.0L or something,3.73's for sure,but with the 4.6L with 4.10 equals to what a 5.0L is with 3.73's,no B.S.:wink:
That is right out of an old issue of Muscle Mustangs.:tup

I believe it. It hums along nicely on the hwy @ 1600rpm but if you "accelerate" in fifth, it sounds like it's labouring and taking more gas cause there's no power down there.

Right now I have a 10min hwy drive but I'm plannin on moving into town so 4.10s sound pretty good. 4.10s it is!
Thanks everyone for talking me into 4.10's! :tup When the weather gets better I'll plan on gettin some FRPP cogs and throwin em in.

I did 3.73's in mine.... she hums along quite nicely now....

but I'm doing 1800 - 2000 on the highway now...

4.10s are great if you're running an auto... but not a stick IMO.... makes innercity driving a little to squirrely if you've got a loose driving surface and a heavy foot.

But you have a pushrod motor where the torque is down low,that is one of the 5.0L's forte :wink:.Modular motors make sh!t for torque down low,more like closer to 3000 grand before we got torque!:banghead: That is why the modular motor family needs a steeper gear.:tup