373 or 355 gears
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Old May 8th, 2011, 08:16 PM   #1
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373 or 355 gears


i have a 90 lx stick. im curious if i should get 355 gears or 373. i dont drive it much but was curious of what kind of pull i may expect and the drivability of the gears.
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Old May 8th, 2011, 08:53 PM   #2
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If you don't drive it much, 3.73's all day long. Expect to shit yourself the first time you gun it, and save money for tires, lol. Driveability is the same except for higher rpms down the highway.
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Old May 8th, 2011, 08:58 PM   #3
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I agree- I had a 90 lx stick 20 yrs ago and went from stock to 3.55's- 6 months later, I did the 3.73's and they were perfect- I just put 3.73's in my 89 saleen about 2 months ago. Definitely the best gears for a fox body.
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Old May 8th, 2011, 09:05 PM   #4
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Owned a Mustang with 3.55 and now have another with 3.73 gears. Go for the 3.73 gear.
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Old May 8th, 2011, 09:27 PM   #5
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ive got 3.55's in mine and they suck if you plan on drag racing. id go for 3.73's thats what im swapping out for soon. also had 4.10's in a 94 and i hated every second of those.
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Old May 8th, 2011, 09:29 PM   #6
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I have 3.73's and love em.. this thread is getting unanimous lol
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Old May 8th, 2011, 09:33 PM   #7
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i got 3.73's in my 88'. do it-
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Old May 8th, 2011, 09:34 PM   #8
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3.73
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Old May 8th, 2011, 10:58 PM   #9
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what about if you have a power adder.....I have a S-trim and wondered if 3.73 would be to much with that, if 3.55 should be better. Any ideas or experiences?
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Old May 9th, 2011, 12:15 AM   #10
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3.73's are the perfect gear for a stockesh 5 speed fox
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Old May 9th, 2011, 12:44 AM   #11
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Ive heard 3:27 or 3:55 if use a power adder, Im going with 3:55 and i have 3:27 right now
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Old May 9th, 2011, 09:38 AM   #12
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Originally Posted by ryanw View Post
Ive heard 3:27 or 3:55 if use a power adder, Im going with 3:55 and i have 3:27 right now
That pertains to a turbo setup... if your running a blower you'll want to go to 3.73s or more depending on your cam/shifting rpm etc
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Old May 9th, 2011, 12:50 PM   #13
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I think I might have to stay 3.55 or 3.73 at the most.
I'm afraid of too much gear and really not being able to keep the tires hooked up, specially since its going to be a street car not a track car.
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Old May 9th, 2011, 09:56 PM   #14
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thanks for the help i just bought the 373s a couple of hours ago. anything i should buy additionally with it?
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Old May 9th, 2011, 10:38 PM   #15
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If the car Is highmileage replace the bearing and trak-lok if you have the extra money laying around.
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Old May 9th, 2011, 11:23 PM   #16
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the eng has 106k miles. is this a bearing kit i need? Ford Racing M-1225-B Ford Racing Heavy-Duty 8.8'' 31-Spline Axles
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Old May 9th, 2011, 11:31 PM   #17
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No, you need the bearings that work for 28 spline axles if the axles are stock.
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