ToplessGT

since it will be a track car, then maybe even go 4.30's. All depends on mods your gonna do down the road. 3.73, 4.10, 4.30 either one will be better than stock....

AdderMk2

You guys really need to take your heads out of your asses sometimes....

HERE ARE THE RULES FOR GEARS!!!!!


AOD: 3.73 or 4.10
5-speed RACE ONLY 4.10
5-speed DD w/highway driving 3.73
5-speed DD w/SC w/highway driving 3.55


3.55's will allow you to still keep your car in 4th gear in the 1/4 while s/c. Unlike some of you noobs that run... 6 or 9 psi. Be a man, get some *****, put in a REAL tuning system and drop 15+psi


If you REALLY want me to. i can make up a few tables showing speed/rpm with each of those gear sets.... per gear.... 1-5

Tims 88GT

bull i would of went with 4.10s if i did it over, i should have done it the first time.

90Mustangfan

yup 4.10 all the way...next car 90' w/ 351w, im going to run 4.30's in 5-speed...3.73 arent enough gear. you get bo at times in 3rd 4th the pull isnt that great w/ 3.73 so, 4.10s are the sh+t

88BlueGT

Everyone has thier own opinion and thats ALL this is. I personally would go with 4.10's no matter what in an AOD or 5 spd... I actully wouldnt mind 4.30's in an AOD.

ReVz

I'm aiming for 12's all motor first before any power adder. I'm not to sure what type of power adder I want. S/C or Turbo. I would love to have a turbo but I still love that S/C sound I just don't know what gear to go with

88BlueGT

I would go with 3.73's w/ a supercharger. NA I would personally go with 4.10's +

Chris83179

Haha, I have an STi. The gas mileage is about the same as my fox. You should buy it from me

http://www.craigslist.org/pen/car/147804622.html

sayos

So I figured out what a different gear ratio will do to the engine's rpm.. You take the differance in ratio of the new gear and the old one: 4.10 (new) and 3.08 (my old one) 4.10 - 3.08 = 1.02. Then you take that (1.02) and devide it by the original gear ratio (3.08). 1.02 / 3.08 = about .33 Take your target rpm (to see how much it will jump with the new gear ratio) say 2000 rpm and multiply it by the % it will jump (.33) 2000 x .33 = 660 you add it to your target and you get your new 2660. it works for any rpm, as your rpm will cange the higher it gets with a new gear ratio.
.33% is the how much change you'll see in rpm.

4.10 - 3.08 = 1.02
1.02 / 3.08 = .33
(target rpm) x .33 = new rpm
make sense?

OnyxCobra

since when are there "rules" for gears? How can you put a rule on opinion? I love my 3.55s, they're just what i wanted and plenty for me and im glad i didnt go any lower. Does that mean i bought the wrong gear? just because a car is never gonna be on the highway doesnt necessarily mean you should do a low gear.