Looking to change my gears over to 3.73 in my V6. Anybody have any issues with it?

 

Hello,

Added to Your Title a Bit to get more Views.

I would Be Curious to Your Current axle Ratio and is This a Daily Driver and Do You Do A Lot of Highway Driving??

I Found This and It's Got Quite a Bit of Info to Gleen!

https://www.diyford.com/choosing-the...-sn95-mustang/

KC

 

I got a Cobra independent suspension it seems like. I bought the car off someone that needed to get rid of it. Already did the exhaust, and got a Cold air intake. Just looking to do the gears now.
It’s my Daily.

 

The Rpm Calculator Will Show You How Much Your RPM's Will Change with a Gear Change. That Article Link I Posted Talks About All The Mustang Rear Axle Options. You Will Likely Need Tuner or Speedometer Calibrator if you Want the Speedo to be Accurate. I believe Your Overdrive Gear Ratio is Around .70 For The Chart.

https://themustangsource.com/forums/...ulator-549545/

Changing Rear Axle Gears and Getting Them Set Up Correctly is a Real Pain. If Not They Whine and or Wear Out Prematurely. I worked at A Lot of Ford Dealers over the Years and Usually only 1 or 2 Guys in the Shop Could Do Them Correctly. Just an FYI!

As Far As a Performance Upgrade it Really Depends on the Spread. Say If You Had 2.73 Ratio and Went to a 3.73 You Would Really Feel it and of Course the Car Would Run at a Higher RPM at Same Speed. Now Say You Got 3.45's and Went to 3.73 It Would Be Barely a Change. So What You Have now Will Determine if a Swap Would Give You Much Gain.

Searching Around The Forums Some Say 4.10's on The V6 But Again What You Got Will Determine How Much Gain. A 2.73 to 4.10 Would Certainly Give you Quicker Response But At the Loss Of a Lot of Top End Speed and A Lot Of Increased Rpm at Highway Speeds.

KC.

 

thanks for the advice! I’ll definitely keep that in mind when looking at gear ratios.