Simple Question

[GREYFOX4INCH]

ok,
stock 1988 gt mustang.
realy strong motor.
same tranny.
same driver.
exact same driving.
same everything......
except
3.73's
and then
4.10's

i dont want opinions, im talking if you did the same EXACT run.
mathematically, what gear ration will get you to the end faster?
speaking mostly in terms of ET
am i as stupid as i think i am for asking this?????

 

[Daggar]

You're not stupid but you're also asking a question that there's no definitive answer to. There's just too many variables involved to give you just one asnwer. Take into account (off the top of my head):

Rev range
Wheel Diameter
Power Band
Traction
Speed across the line
Time between shifts
and more...

and it starts getting a bit dicey as to what that "one" answer is that you're looking for.

 

[GREYFOX4INCH]

I know, but i guess what i mean is, if you were to apply the gear ratios to somthing consistant. if we were not talking about cars at all.
like maybe some type of machine. somthing that consistantly moves one object from point A to point B.
but i guess when you bring it down to this level all i am talking about is the ratio itself. and the # of rotations per rotaion.
nevermind, maybe, i dunno

 

[25thmustang]

It still depends, there are cars out there that a 3.73 is perfect for, and cars that a 4.10 is perfect for. I can say for the most part on an NA car with room to improve (your not using the 3.73s to their optimum) you might see a tenth or two...

 

[QDRHRSE]

In reality this question is unanswerable. However, mathmatically it can be solved. If I can find the slo5.0 website I will run it through their et calcr.

 

[jackchan]

my opinion:

Ohhh I forgot you don't want opinions...

i dont want opinions

 

[darthcual]

Think of gearing like stairs vs a ramp. Its the trade off matrix. stairs are quicker, ramps are easier and require more time.

 

[bimmertech]

i think what it boils down to is if you have to shift into overdrive with the 4.10's. if you do then they will be slower, if not then they should be faster.

 

[GREYFOX4INCH]

In reality this question is unanswerable. However, mathmatically it can be solved. If I can find the slo5.0 website I will run it through their et calcr.

well i mean, 4.10s should rotate the tires more times per rpm then 3.73s right?????? so it should move the car forward at a faster rate.
or do i have it a** backwards

 

[gt40_2003wes]

there is to many variables to answer that its what the driver is most comftorable with and what the car is most comftorable with.

 

[fiveohGT]

i think what it boils down to is if you have to shift into overdrive with the 4.10's. if you do then they will be slower, if not then they should be faster.

You don't have to shift into overdrive on 4.10s

 

[fiveohGT]

Leaving everything an exact constant except for the ratios, 4.10s will get you to the otherside faster on an stock N/A setup based only on the fact that a steaper ratio multiples your torque therefore helps you accelerate faster.

The only problem with this - this theory can't be proven.

There are other cases however where mods come into effect. You want the right ratio for your powerplant - N/A or FI

 

[JB66]

The transmission gears and rear axle gears are nothing more than torque/HP multipliers. Ideally, their design is to keep the engine at or near the peak torque or HP point in most situations.