Speedometer is off with 4.56 gears

[03shadowgreygt]

I just changed the 4.10s out for 4.56 gears in my 98 cobra, now the speedometer is off, i had the right gear on the speed sensor for the 4.10 gears. I thought i heard that you have to change the drive gear in the trans to make it accurate along with a new gear on the speed sensor. I know a few of you have 4.56 gears and I was hoping you would remember what you used to correct this. thanks for the help

 

[Blown_By_You]

call 5.0 resto.. they'll tell you and sell you what you need...

 

[Gallows]

Sounds like you need a speed cal. I "Think" 4:10's are the highest you can correct with trans/speedo gears.

 

[VirtualSVT]

Yup. Speedcal only time for you.

 

[03shadowgreygt]

thanks, I guess I will go by dallas mustang this weekend and get one