[MustangKid9807]

What is the difference between 3.73 and 3.55 gears and how does it effect your car when you change them? I'm 16 years old and dont know alot about cars.

 

[stlwagon]

A 3.73 gear means the driveshaft spings 3.73 times for every axle rotation. 3.55s mean it spins 3.55 times for every axle rotation. The steeper the gear the quicker the acceleration since you're spinning the driveshaft faster.

 

[blackstang17]

nevermind he already did lol

 

[blackstang17]

What kind of stang you got im 18 i dont know much about gears but i know 4.10 gears make your car accelerate faster 3.73 do to but not as good as 4.10's i think but i know more people choose the 3.73 gears.Ask Stl he knows everything.

 

[Bocephus357]

How much mpg would you lose going from 3.31 or 3.55 to 3.73? and how much will that hurt top speed?

 

[04KenneBellGT]

You'll lose like maybe 2mpg (depending on how you drive it). And top speed might be cut to like 125-130mph, but who cares about top speed, its all about 1/4 miles times.

 

[stlwagon]

Top speed will not be affected. Your car could never achieve the theoretical top speed anyway. For example, my theoretical top speed with 3.55s is 222 and 192 with 4.10s. I'm not too worried about losing those 30 mph.

 

[fobra559]

People choose 3.73's as a good all around gear. 4.10's are great for people who have a car they take to the drags often or just want to straight out have off line acceleration. I chose 3.73's because I drive a lot on the freeway and the rpms for me rev a bit high. If you want a compromise between 3.73's and 4.10's, get 3.90's.

 

[cojakc]

getting 4.10s might not be that bad though on mpg if u get a better intake to make up for it =D

 

[fobra559]

Your right. It won't be that bad but your right foot says otherwise lol.

 

[MustangKid9807]

How would you change the gears? I have a 2005 v6 Mustang

 

[cojakc]

you have a very skilled auto shop do it for you. bring them the parts and theyll install the gears for you. labor could be between 300 and 500 bux

 

[MustangKid9807]

So what all do you have to get to switch gears to 4.10?

 

[stlwagon]

So what all do you have to get to switch gears to 4.10?

New ring and pinion, master install kit, 3.2 pts of 75W-140 fluid.

 

[stlwagon]

you have a very skilled auto shop do it for you. bring them the parts and theyll install the gears for you. labor could be between 300 and 500 bux

+1... This is not generally a DIY mod.

 

[MustangKid9807]

Thank You ... also can you have a under drive pulley and a supercharger, because someone told me you couldnt

 

[MustangKid9807]

Thank You... also can you have a under drive pulley with a supercharger? cause someone told me you could not

 

[stlwagon]

Thank You... also can you have a under drive pulley with a supercharger? cause someone told me you could not

No... Ok with a turbo but not a supercharger.

 

[cojakc]

if ur planning on buying gears tho, since im guessing ur mustang is ur daily driver ppl have said tht 3.73's are good for the daily driver. my mustang has been my daily driver since i turned 16 (last year) and im thinking on getting either those or 4.10s

 

[MustangKid9807]

Also as you get more horsepower, like from a supercharger, cai, dual exhaust, tuners. Is there anything else you will need to get or anything to suport the horsepower or whatever.