This is topic gear selection? in forum Tech Talk at Northern California Ford Owners  .


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Posted by baymustang (Member # 3246) on :
 
what size gear should i go with for my 87 lx, 3.73's or 4.10's, i go on the freewayabout once ortwice a week so i do alot of in town driving but when i go onthe freeway its about an hour or a little more drive so i need some info for gears thanks
 

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Posted by kwikrob (Member # 835) on :
 
It's up to you. Since you don't do much freeway driving, I would go 4.10's. If you don't race it much or/and are still looking for good gas mileage, go with 3.73. This has to be the single most asked question on this board!
 

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Posted by 88DroptopGT (Member # 2535) on :
 

quote:

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Originally posted by kwikrob:
It's up to you. Since you don't do much freeway driving, I would go 4.10's. If you don't race it much or/and are still looking for good gas mileage, go with 3.73. This has to be the single most asked question on this board!

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Seriously it is isn't it. Use a tire calculator to find what RPMs you'll be with your tires/slicks and imagine if you're fine with the extra gas and cabin noise when crusing at 70-80MPH. Also drive someones else's car and ask if they could choose again, what would they get.

[ January 09, 2004, 06:41 PM: Message edited by: 88DroptopGT ]
 

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Posted by BlueLightning302 (Member # 3974) on :
 
If a 5 spd and you plan on leaving the stock cam or running a S/c get the 3.73's, otherwise 4.10's if you plan on more mods or run an A4
 

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Posted by 1989lx5.0 (Member # 3699) on :
 
if you have a aod i would go 4.10's, i just went from 2.73's to 410's in my 89 lx and oh my god!! what a diference, now it wont hook up at all but pulls soooo! much harder time for some better tires and suspension work
good luck!
 

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Posted by zpyro35 (Member # 3745) on :
 
so in my AOD Tbird i would go with 410's, cuz it's weaker than your stang, eh?

dumb "standard output" crap...


how involved is it to change gear sets? is it better off having a gear shop swap em? if so, how much does that usually run? how much more if you decide to ditch the peg leg and get a posi?
 

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Posted by 1989lx5.0 (Member # 3699) on :
 

quote:

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Originally posted by zpyro35:
so in my AOD Tbird i would go with 410's, cuz it's weaker than your stang, eh?

dumb "standard output" crap...


how involved is it to change gear sets? is it better off having a gear shop swap em? if so, how much does that usually run? how much more if you decide to ditch the peg leg and get a posi?

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i would say that with the aod and the wieght of the tbird that 4.10's would work great, and its not that bad on the freeway i drive 60 miles each way to work and i still take my stang sometimes and its not that bad
i cant give you any rpm's@mph because my speedometer is way off right now. a buddy of mine at work did my gears and did a geat job and he's right in clovis so when your ready let me know and i will hook you up with him he only charges like $150
 

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Posted by Luke87GT (Member # 21) on :
 
how about you compromise and go with Motive 3.90's? I am very happy with mine

Cheers
Luke
 

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