[HMUSN]

you don't have enough power to make it to your top speed even if you get 4:10's

[phebecates78]

people say they do but honestly are you going to be doing 130 on the highway

[gtcs mustang 13]

ive hit 140 so with that what would be my top with 4 10

[HMUSN]

over 140. closer to 170 if you had the power to do it.

[phebecates78]

well u guys are nuts lol i dont see the need to go that fast especially i have 2 speeding tickets under my belt lol idk how fast 4.10s let u go im sure not much past 130 coz 130 stock in 5th tachs about what 3000 3500 so with 4.10 it would be close

[HMUSN]

I have been over 150mph with 4:10's man.

you'll be fine.
Its a great gear.

[phebecates78]

yea like i sedi dont really know...150 is crazy dont get me wrong tho im not scared ive been up that fast a few times but wow lol it sounds like u guys do it daily haha..dont even hesitate to get the gears tho definitly best mod for the money by far

[HMUSN]

I don't make a habit of it.

[zers]

over 150 in a 5 speed or 6 speed car? (sorry, i'm a classic guy, and i have 4, just curious =P )

[HMUSN]

5

[StangAddiction]

I've got the stock 8.8 with stock 28-spline axles and 4.10s and im making way more power than stock and i haven't had any issues...

With larger 31-spline axles the 8.8 will handle A LOT of power..

With 9-in ends and some 33-spline axles...I cant see you breaking the 8.8 on the street or even the track really...I've seen cars with 800-1000hp setup like this running DRs.

A 9" rear isn't all that necessary.. Unless you're car's jus a torque monster and u beat on it hard..

[gtcs mustang 13]

thats good to know does any know how much turque stock mustang axle can handle

[StangAddiction]

Originally Posted by gtcs mustang 13 thats good to know does any know how much turque stock mustang axle can handle

As a general rule, i'd reccomend upgraded to bigger spline axles when you reach the point where you require some internals. Assuming your car is a street car.

If its a track car and you're running sticky tires a built rear end and a capable tranny should be your top priority...They're usually the first to go.

It depends on a lot of things...I'd reccomend it be one of the first things you do to your car...Getting gears? You should get a nice locker differential and some hardened 31-spline axles to compliment. It's cheaper in the long run to have it all done at once.

[gtcs mustang 13]

whats a good locker diff plus where can i get line lock

[StangAddiction]

Good Lockers:
Eaton Posi, Detroit Locker, Auburn Pro

AS for line locks i know hurst makes one and probably B&M

You dont really need one unless you need to lock your wheels to burn out. Most people just regulate the brake pedal and accelerator