98GTstang

I got my 4.10's re-shimmed, this time i did the whole install by myself pretty much, i took the old shim off my old pinion and used that, its perfect no noise at all. I love the gears, there awesome, i dont know how people can say they dont have enough 1st gear with 3.27's..but 4.10's kick a$$ OHh and my speedo is off like crazy, what can i do to make it accurate? a tuner or a speedo gear in the tranny? Any help would be excellent, thanks

black01gt

You can either do it by a Tuner Or a Speed Caliber. Either one

Jiggy_One

The tuner will do so much for you, so its worth it for you to get it. I bought mine "used" for $200. A used tuner is like not even considered used like an engine part. Most likely it was used once to upload the new tune and clear a few codes. Buy used if you can.

Brian

ajspellm

i couldnt find a tranny gear big enough to fix mine. i bought a 23 tooth and the speedo is still off by like 15 mph so dont waste your money on that.

gt96stang

DALLAS MUSTANG SPEEDCAL.

rbstang

if you got the money.... diablosport or sct-xcal. 6-10rwhp buy pressing a button

Dark_Horse

just get the Speedo gear. its like $15 i forgot

Dsmfighter

I bought the gear for my 4.10's, and i'm still off 8mph...wtf...thats some next level b.s. if you ask me!

mustang_montana

i forget when they switched it to the electronic calibration but i know for 96s you cant change the speedo by a tuner, i think thats the same through 98 meaning you need the right speedo gear.

98GTstang

Will a speedo sensor change the speedometer? Ford racing has one on there site