Aod's With 3:73 Gears?

Discussion in '1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-' started by 93stangTN, May 27, 2005.


  1. 93stangTN

    93stangTN New Member

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    anyone running these?? i want gears soon, and was goin to go with a 4:10... but some say at the end of the 1/4 mile.. there out of gear... i want be drag racing mine alot though.. i just want it to pull hard from dead stop... it does pretty dang good now though for stock gears... so, what u all think????? 3:73 or 4:10's :shrug:
  2. Bobert

    Bobert New Member

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    Is the car mostly stock? If so, you won't run out of gear with 4.10's. Stock converter I assume.

    My stock aod car has 3.55's. It's so-so out of the hole, but a 4.10 car feels much better from my experience. Do you know what gear you have now? May be 3.27's.

    Don't see them mentioned much (ok, maybe never), but someone makes (or made) a 3.90 gear for an 8.8.
  3. 93stangTN

    93stangTN New Member

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    yeah, the car is mostly stock, i just plan on doing CAI, Headers, H-pipe, Gears, Edlebrock intake, 70mm TB..... so would a 4:10 be good, or should i go with a 3:73??
  4. powertrax91

    powertrax91 Founding Member

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    go with 4:30s... DON'T FEAR THE GEAR :D
  5. Bobert

    Bobert New Member

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    You'll get a little less gas milage with 4.10's, but more out of the hole power. I;d find out what factory gear you have (there's a tag on the center section of the axle, or the door has a tag and you'd look for a letter under "AX"....for example, M under AX is a 2.73). And this is assuming the car doesn't already have a gear (which you really may want to check before you do anything).

    If you have 3.27's and feel you just want a little increase in off the line power, but don't want MPG to suffer much, 3.73's would probably be better. 4.10's will get it out of the hole faster, but it will become harder to hook. But the few stock aod cars with 4.10's that I know of could still hook pretty good with regular radials.
  6. 89MustangGX

    89MustangGX I have nothing productive to add!

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    If you're anything close to stock you will NOT run out of gear in the 1/4 mile with 4.10's.
  7. 5spd GT

    5spd GT "the 5.0 owns all" Founding Member

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    You will eventually add more power most likely...

    Get the 373's...

    Do I have to list the pros and cons again:)
  8. HISSIN50

    HISSIN50 "How long does it take to get help in here? SN Certified Technician

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    David and Adam, how about making a sticky about gears. :)
  9. Blakthorn

    Blakthorn Member

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    i have aod and 3.73 - get them
  10. The Fox

    The Fox New Member

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    I second the STICKY gears thread. Definately too many of these.

    And for you I say go 3.73 just becuase. It's better for the car, easier to drive, better gas, and you'll have a little extra once you start makin more horses. And the difference between the gears (depending on a lot of factors) are about 300rpms... I think.
  11. Foxfan88

    Foxfan88 My Grandpa has great wood.

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    I was debating b/w the two gears and i decided 3.73
    I have a friend, who has a STOCK 5.0, has a 5lb SC and 3.90 and he runs out of gear, he is forced to shift to OD which hurts his times.
  12. trevnut

    trevnut Member

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    i run 4.10's and dont run out of gear on he motor.

    unless im juciein her! then you just put a taller tire on. and go!
  13. Biggeley

    Biggeley New Member

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    It depends on your mods or your anticpated mod levels.. What sort of trap speeds are you planning on running? Where is the peak of your powerband? These will help you determine what gears you need.

    For instance 4.10's with 26" tire hit 6200 rpm @ 112 mph.
  14. 5spd GT

    5spd GT "the 5.0 owns all" Founding Member

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    Since you said your not going to be drag racing your car a lot...I say you don't pick a gear based on the drag strip. Pick one based on your daily driver wants/needs.
  15. HISSIN50

    HISSIN50 "How long does it take to get help in here? SN Certified Technician

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    What is wrong with you?

    This just seems like solid logic, which is something that does not apply to many gear threads. :)
    (For the sarcastically-challenged [like I apparently have been lately], I agree completely with these thoughts). :nice:
  16. rsw007

    rsw007 New Member

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    go 4.10's
  17. willys1

    willys1 Banned

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    I got 410's rite know but am putting back in my 373's :shrug: If your worried about gas mileage 410's limit you on the highway.And besides that my 1/4 mile times were 2 tenths faster with my 373's!! But if your looking for head snapping hole shots a high speed torque converter is want you want :nice: It improved my hole shot dramatically,"even with stock gears"! And to answer your next question,Precision Industries (stallion) 2400 stall speed,,or Edge 3000 stall speed are the 2 best converters for stock 5.0's!!But if you get a conv. youll need a tranny cooler or your tranny will burn out :notnice: (70 bucks)
  18. billpo

    billpo New Member

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    Go with the 3:73's. I just installed them on my AOD. I don't think you will
    like the 4:10's if you do any sort of highway driving. I also insatalled an transgo shift kit. These 2 mods made a huge difference.
  19. 1mild88lx

    1mild88lx New Member

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    With 3.73's I drive 65mph while taching @ 2200 rpm. I also get 23mpg combined.
  20. Biggeley

    Biggeley New Member

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    Probably the best advice I've heard in a while. Get the proper converter for getting off the line properly. Gear it to make best use of your 3 gears through the quarter.

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