rear end questions

[jwatson21]

thinking about buying some new gears for my 98. Its got a auto and just got CAI, BBK catted h pipe and flowmasters, was wondering if i should go 3.73 or 4.10's?

 

[adrift]

thinking about buying some new gears for my 98. Its got a auto and just got CAI, BBK catted h pipe and flowmasters, was wondering if i should go 3.73 or 4.10's?

My opinion is go 4.10s. I have them on my auto and I think I'd have been disappointed had I gone 3.73s.

 

[NXcoupe]

4.10s are more popular behind an auto NPI car. But 3.73's will work well too if you drive on the expressway a lot and that steep 4.10 concerns you.

 

[94-427]

do U have a stall? How much HP in engine Is transmission in good condition?
U have a 4R70w trans witch will give U the same take off with 3.27 gears as if U had a 4.21 in rear end [first gear is a 2.89] [3.27X1.289=4.21] 3.55 is a good gear choice for every day driving with out compromise [3.55x1.355=4.57] in first gear

 

[jwatson21]

no stall, hp maybe in the 250 range?

 

[jwatson21]

transmission is in good shape for having 130k on it, and i do drive alot on interstate.

 

[just a 98 gt]

interstate you want 3.73s i put 4.10s in mine and it kills me to drive the interstate and like the other guy said 3.55 would be a better choice

 

[adrift]

interstate you want 3.73s i put 4.10s in mine and it kills me to drive the interstate and like the other guy said 3.55 would be a better choice

Do you have an auto?

 

[jwatson21]

im sure 3.73 would make my pull harder but what kind of rpm's would i be turning at 70 mph? as of now its right under 2500

 

[just a 98 gt]

interstate you want 3.73s i put 4.10s in mine and it kills me to drive the interstate and like the other guy said 3.55 would be a better choice

nope tko 500

Do you have an auto?

 

[gt96stang]

no stall, hp maybe in the 250 range?

No way your in the 250 ballpark with those mods on a npi car.

But I say 4.10's... I've pulled 23mpg out of my car with 3.73's. And I wish I would have went with more gear.

 

[jwatson21]

250 was just a estimate, idk how much really just guessing

 

[reds_blackgt]

ive got a 98 gt with a 5 speed in and i have the same mods as u do but i have a off road x pipe and i put in 3.55s and my car is reving at 2100-2200 going 60 mph. i got about 22 1/2 mpg on the high way. i wish i would have put a set of 3.73s in instead of the 3.55s. but as of my type of driving i dont give a crap about mpgs its more like how fast can i get somewhere.

 

[98mustanggtkid]

I have an Auto and a 3:73 gear I m happy with mine its got good go and isnt bad in the highway

 

[duff daddy]

Im a fan of the seach button but you really need to just look and see whats going on what your using the car for and then there will be an answer out there, dd and no track 73's some track 10's ....

moved to general tech

 

[JDwhite98gt]

UH OH start running...where's Paul? (while peeking from behind dense shrubbery)
Get 4.10's and nothing less.

 

[MustangChris]

4.10 or higher.... or your a vag.

 

[jwatson21]

thanks chris, ill remember that

 

[Crone]

I put 4.10's in mine and wishing I would have just put my 3.55's in. 4.10's sure are fun but turning 3000rpms just to keep up with the flow of the interstate is not. If your in doubt you probaly should stick with 3.73's, especially with your commute.

 

[94-427]

I have run all the gear choices U are all taking about
the 3.55 will give a good take off and not kill milage like 4.10
4.10 are too much gear for a auto car with minor add on's will actually slow U down in Quarter times
IE accelerate slower [ ben there done that wore out the T shirt]