3:73 Gears in a 98 GT. difference in MPG & MPH?
#1
3:73 Gears in a 98 GT. difference in MPG & MPH?
my 98 has 3:73 gears in it and im wondering how off the spedo is at highway speeds (65 or so) and at city speeds (30-45).
also what differences do they make to MPG: City/ H.W.
also what differences do they make to MPG: City/ H.W.
#2
It will increase your city mpg and lower you highway, but ultimately not changing mpg all that much. Im not sure about speedo, i would just get it calibrated so it doesnt rack up your miles and you dont get pulled over.
#5
Here's my "How fast can I go in each gear?" calculator. Select your transmission (BW T-5) and 3.73 gears too see the chart for your car...
#6
GO WITH 4.10s!!!!!!!!
#7
Gonna need a speed cal to correct as a tuner does not work on 98 back
#9
or you can swap out your drive/speedo gear for much less then the cost of that. just saying, my 6 tooth drive gear and my 21 tooth speedo gears puts me almost dead even to my original set up, i think a little under 1 percent reading high... it will cost you about 15-20 dollars for the gears and the price of refilling your transmission.
http://allfordmustangs.com/forums/4-...haft-swap.html
here is a link that will help you out a bunch if you do this.
PS the 6/21 gear ratio is for the 4.10s, if you wanted it for 3.73's you need to get a different ratio
http://allfordmustangs.com/forums/4-...haft-swap.html
here is a link that will help you out a bunch if you do this.
PS the 6/21 gear ratio is for the 4.10s, if you wanted it for 3.73's you need to get a different ratio