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<P>From the factory mustangs usually come with a 2.73 gear ratio unless you have an svo which in '84 they come out with 3.45 and in '85 and '86 3.73 was standard.┬* Yoe had 2 options for different gearing in mustangs: 3.08 for 5-spd cars and 3.27 for autos.┬* Changing the gears is one of the first things that i would do to a stang.┬* Then we get into choices of different ratios.┬* so here is my opinion on this subject.┬*┬* First you have to decide what you want to do with your mustang.┬* Is it going to be a daily highway driver?┬* A Sunday Driver? Will you be stuck in the city(stop and go traffic)?┬*┬*or just a weekend dragracer?┬* You basically have 6 choices for gears:┬* 2.73, 3.08, 3.27, 3.55, 3.73, and 4.10.┬*┬*┬* the first 3 gear ratios are better for top-end, high speed performance, and the all important fuel economy to the highway commuters. 3.73 and 4.10┬*are better for┬*acceleration and┬*low end┬*responsiveness.┬* the gear ratio that i have left out was┬*3.55.┬* it is kind of an all around gear you get fuel economy and still have the power to pass cars at will on the free way.</P>
MORE THAN LIKELY YOU HAVE A7.5 REAR END AND I WOULD RECOMEND THAT YOU CHANGE IT OUT FOR AN 8.8 REAR. THE GEARS ARE PROUBALLY 2.73. I WOULD GO BACK WITH SOME 3.55 BECAUSE YOU WULL NOT HAVE ANY OVERDRIVE UNLESS THIS IS JUST GOING TO BE A RACE CAR.
Still wheel hangin' and gear bangin'
Theres nothing wrong with that 7.5 rearend as long as you dont go running slicks on it!And being that it was a 2.3 and a 5 speed it most likely has anywhere from 3.08's to 3.55's.My 1989 2.3 with an A4LD had 3.73's from the factory.And i am still currently running the 7.5 and have been for 3 years now behind a 331 with no problems at all.</P>
Now thats not to say everyones is that good.If you can or you happen to run acrossan 8.8for cheap i would get it for sure and atleast keep it until the 7.5 gave out.But running around on the street on regular radials you shouldnt have a problem.</P>
To tell whats in your rear look at the rear axle tag or lift the car and count how many times the drive shaft turns in comparison to the rear wheels.</P><edited><editID>TheGmKiller331</editID><editDate>38023.9970833333</editDate></edited>
hey buzz stang having a good day???i tryed every gear possible,,so i know first hand,,so call me ...i had ,,3.27,,3.73,,4.10,,4.30..i swap back and forth so much am going crazy<IMG src=smileys/smiley5.gif border="0">
Most of the mustang folks recommend no higher than 3.73 for 5 speed and 4.10 for aod street cars.
If it is modified for street/strip, you can go as high as 4.10/4.30 so trap rpm's will be in the 6000rpm range depending on tire diameter, etc.
It is also recommended that if it is turbo or s/c, no gear higher than 3.73, as you're going to be romping and stomping at the 1/4 mile mark.
3.55's will disappoint you if you even take a ride in a car with 3.73's. You will really get your jolly's if you run 4.10's, but don't get p.o.'d by the mileage, cause it will go away pretty quick. Just depends on what you want the car to do. I hate hearing people say they're worried that they're mileage will go south. If that's a problem, keep the stock gears and run consistant low 15's.
You're going to pay close to or right at $200 for the gears, whether they be frpp or richmond. Some sell cheaper, but you get what you pay for. Mine were frpp and came with all holes chamfered and gears deburred.
I believe I paid $175-$200 for the install thru a local speed shop. I don't trust pep girls or one of those outfits.
yeah, i bet your that you have 3.08's in there if it came stock with manual trans
88GT Vert. 3.73's, Trick Flow Intake, 1 Inch Spacer, 70mm Thottle Body, CAI, Performance Chip, Electric Fan, Mass Air, Straight Pipe, B&m Ripper Shifter, CenterForce Clutch, .... Off The Top Of My Head
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