This is topic 3.73's vs 4.10's in a automatic in forum Tech Talk at Northern California Ford Owners  .


To visit this topic, use this URL:
https://californiafords.com/cgi-bin/ultimatebb.cgi?ubb=get_topic;f=6;t=017885

---

Posted by 01 GT (Member # 7932) on :
 
i have a automatic 2001 mustang gt need opinions between 3.73's and 4.10's
 

---

Posted by Xplosive22 (Member # 8210) on :
 
I have 3.73's in my '07 manual. I really like them although I have some whine. I run probably 300RPM over what I used to run at freeway speeds. I hear 4.10's are much worse. If you have any concern for fuel mileage then I would do 3.73. They are enough for me because I commute a lot.

Another thing to research is how to identify real FRPP gears from Motive made ones. I paid extra for the FRPP set but they make a bit of noise. I really don't like it but it is too late. If I had known I could identify which gear sets were actually made by FRPP or Motive I would have been more careful. That is if you care whether they whine or not.
 

---

Posted by 01 GT (Member # 7932) on :
 
thanks i just bought some ford racing 3.73's so now im waiting untill the weekend to put them in and i guess well see
 

---

Posted by Pittsburg Mustang Owner (Member # 6100) on :
 
I had 4.10s in my 04 auto and couldnt be happier.

With 4.10s, o/r X pipe, tune (with changed shift points and firmness) intake, TB+plenum, and UD Pullies and my car went 13.6@101.

If i were to do it again, id still do 4.10s, kinda evens it up against the 5 speeds.
 

---

Posted by Curt (Member # 6254) on :
 
4.10's
 

---

Fueled by Ford Mustang Owners
on CaliforniaFords.com