Is there REALLY a difference in acceleration between the 3.23 3.75 and 4.10 ratios: Assume a completely stock 6-speed 4 door with Sahara 18" wheels. I'm not asking about any other pros/cons of the different ratios, simply curious if 0-60 speed and highway passing power would actually differ.

My gut tells me that with a 6-speed one could adjust his shift points to get a fairly similar overall result, but I'm not sure about that or I wouldn't be asking.

 

the difference between 3.21 and 3.73 is like night and day.

 

With 4.10's, I've probably got to be winding out 3rd gear pretty good to hit 60mph.

I drive around in 6th at 30-35mph, and it pulls just fine.

If we're strictly taking 0-60 times, the 3.23 or 3.73 'may' get to 60 quicker due to one less shift that needs to take place. Emphasis on the word 'may'.

4.10's are surely the gear you want for quicker acceleration all around. 1st is a granny. On smooth rolling 32" tires, 2nd gear starts are a cinch.

 

...Also,

the 4.10's will have more top-gear passing power on tap compared to the 3.73's. The difference will be noticeable.

I test drove a stock 2dr Sahara with 3.23's... You really needed to watch you shift points. You're going to be going a lot faster by the time you reach for the upper gears. I don't remember the speed or rpms - but I want to roughly say I reached for 6th at about 55, and the motor fell on it's face -- it just maintained speed. No acceleration.

Like I said above, I am in 6th easily by 35mph. The motor turns around 2,400rpm at 65mph. To have any passing power available, you want your rpm's higher than 2,100. My opinion at least..

(if you are keeping 32" tires [with the 6speed], I would personally go for 3.73 gearing. 4.10's are a little annoyingly short sometimes).

 

I don't know what the numbers are, but I have a 10 Rubi 6spd. and I don't have any complaints regarding acceleration or passing. What it be nice if it had a bit more h.p., yes, but you can say that about any vehicle.

 

Going from 3.23 to 4.10 would be a pretty good increase. From 3.73 not so much, but yes, some.

I came from the Mustang world and when I went from 3.27 to 4.10s I gained about a half second in the quarter. That was in a 300 horse car though. So yes you are going to gain some exceleration to answer your question.

 

I went from an 08 with 3.21 to 10 with 4.10. It was amazing in the acceleration, but I agree it seems now that I need to go to a slightly larger tire so it doesn't rev so dang high at highway speeds. I know it is in the power band, but it ticks me off to hear it screaming at almost 3k rpms on the interstate.