motormanimatt

been looking to invest in some 4.10 gears for my 98 mustang gt auto. i found some that someone was selling 410 out of 06 mustang. will they fit myne? and will there be a good improve in power from 0 to 60?

xx10Gt

Stock gear ratio in the rear for the 96-98 is 2.73. (3.27 was optional that year). if you go with 4.10's expect a decent increase in pull from the line but also expect a decrease in MPG but that shouldnt matter because after all, its a mustang...
Youre going to also need a tune if you go this route in order to adjust the cars computer and tune the shift points, i recommend a bama tune.

Also, im not sure if the 06 gears would fit (i dont see how they could), but i would go the safe route and buy a new gear kit. http://www.americanmuscle.com/fopege4ra.html
Doing this you make sure youre putting quality parts in your car and wont harm anything. Only $159 (without tune). Hope this helps!

Z28KLR

Pretty sure they will fit; both cars use an 8.8" rearend.

1998Slow 'Stang

Actually, as the 98 speed sensor is gear driven a tuner WILL NOT correct the speedo, he will need a new drive and worm gear, or a Dallas Mustang Speed-cal (simplest)

uberstang1

Yes they will work.

xx10Gt

yeah, i didnt mean tuner to fix the speedo i just figured for the best bang for the buck type of thing

1998Slow 'Stang

Misunderstood you then, my mistake. Just didn't want him to think it would fix his speedo and then get disappointed when it doesn't.

xx10Gt

Ive heard mixed reviews on this item, but im curious to see if it will work: http://www.americanmuscle.com/ford-s...tool-9410.html

wcgman

Those gears will fit. Just make absolutely sure that there are no cracks, etc... in them. I also believe that used gears from a gear swap aren't the best idea...I'd recommend you buy new...unless they are selling for dirt cheap