Question about gears

[Stang519]

I am looking to put 4.10s in my 08 is there anything that needs to be done with the computer of the car?

 

[BruceH]

I am looking to put 4.10s in my 08 is there anything that needs to be done with the computer of the car?

The tune will need to be modified for the gears so the speedometer will be correct. Do you have a tuner and custom tune?

 

[Stang519]

I will I have everything comming at one time

 

[Roadracer350]

Dont forget that you need to do some math before you go with gears. Depending on the height of your tyres 4:10s could end up being 4:20, 4:30 or even 4:56. Or it could be lower. Their are some roadracers that put in 3:90s and the final raito will be somthing like 4:05. Yes you will need a tuner to fix your speedo tho.

 

[Stang519]

Thanks for the help

 

[silverstang23]

Not to hijack op's thread, but is the install kit that am sells with shims necessary or can the oem parts be reused?

 

[S197MustangGT]

4:10 FTW!!! Probably the best mod I have. Wish I did it first like everyome kept telling me...

 

[BruceH]

Not to hijack op's thread, but is the install kit that am sells with shims necessary or can the oem parts be reused?

All the frpp gear sets I've seen come with a pinion nut and some shims. Replacing the bearings is your call. I've replaced mine a few times (a more accurate statement would be had them replaced because I've never done any of my gear installs), usually after the second gear install on a set. The pinion bearing should be replaced every time.