New rear gears
02-01-2009, 08:36 PM
#1
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Join Date: Jan 2009
Location: Lethbridge, Alberta
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New rear gears
I'm thinking I want to get new gears for a little more get-up and go. I'm thinking 3.73s would be good. Right now I turn about 1600-1700 RPMs at highway speeds. How much of a jump will 3.73s bring at highway speeds?
Anyone have 3.73s? Do you like them?
Also, does it matter what brand I go with, cause I want quality gears but don't want to lighten the wallet too much.
Anyone have 3.73s? Do you like them?
Also, does it matter what brand I go with, cause I want quality gears but don't want to lighten the wallet too much.
02-01-2009, 08:50 PM
#2
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Join Date: Jan 2005
Location: Ontario
Posts: 17,778
I did 3.73's,and they lasted me a season,then i went to 4.10's,and been happy since.
The 4.6 needs the 4.10,3.73's i thought personnally weren't enough (as many others who have done both aswell.....do a web wide search on modular sites
).
They have no bottm end torque,so the gear is what makes up that difference.
Stick with Ford Racing gears.
The 4.6 needs the 4.10,3.73's i thought personnally weren't enough (as many others who have done both aswell.....do a web wide search on modular sites
).They have no bottm end torque,so the gear is what makes up that difference.
Stick with Ford Racing gears.
02-01-2009, 08:59 PM
#3
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Join Date: Jan 2009
Location: Lethbridge, Alberta
Posts: 14
I did 3.73's,and they lasted me a season,then i went to 4.10's,and been happy since.
The 4.6 needs the 4.10,3.73's i thought personnally weren't enough (as many others who have done both aswell.....do a web wide search on modular sites).
They have no bottm end torque,so the gear is what makes up that difference.
Stick with Ford Racing gears.
The 4.6 needs the 4.10,3.73's i thought personnally weren't enough (as many others who have done both aswell.....do a web wide search on modular sites
).They have no bottm end torque,so the gear is what makes up that difference.
Stick with Ford Racing gears.
I found a good speed/RPM calculator Click Here
02-01-2009, 09:19 PM
#4
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Join Date: Jan 2009
Location: Lethbridge
Posts: 101
I'd also suggest 4:10's and frpp ones, lots of others seem to be noisy. What are your gears right now? I think there is no point if you don't make ATLEAST 2 jumps. IE 3:55 to 3:73 = pointless. 3:55 to 3:93 atleast. BUT it seems 3:93's tend to be noisy too. I guarantee you will LOVE 4:10's for the improved fun factor, especially if you have 3:55's or less now. Your gas mileage will of course go down but I think the main reason most people get the drops they do is because it's so much more fun down low they are stomping on it more. :laughhard It depends how much highway driving you do too. If you mostly just put around town I wouldn't hesitate as you can still keep the rpms really low. If you do tons of highway driving you will definently notice the difference. For me it's not bad if I keep her at 110-120k. (i can still get 25mpg with all my crap)
02-02-2009, 03:40 PM
#6
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Join Date: Jan 2005
Location: WATERLOO, ONTARIO
Posts: 539
I did 3.73's,and they lasted me a season,then i went to 4.10's,and been happy since.
The 4.6 needs the 4.10,3.73's i thought personnally weren't enough (as many others who have done both aswell.....do a web wide search on modular sites).
They have no bottm end torque,so the gear is what makes up that difference.
Stick with Ford Racing gears.
The 4.6 needs the 4.10,3.73's i thought personnally weren't enough (as many others who have done both aswell.....do a web wide search on modular sites
).They have no bottm end torque,so the gear is what makes up that difference.
Stick with Ford Racing gears.
:laughhard
02-02-2009, 08:22 PM
#7
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Join Date: Jan 2005
Location: Ontario
Posts: 17,778
I was kinda thinking of Ford Racing gears. This is for my daily, did you notice gas mileage changes when you went from 3.73s to 4.10s?
I found a good speed/RPM calculator Click Here
I found a good speed/RPM calculator Click Here
If you had a pushrod motor like a 5.0L or something,3.73's for sure,but with the 4.6L with 4.10 equals to what a 5.0L is with 3.73's,no B.S.
That is right out of an old issue of Muscle Mustangs.
02-02-2009, 09:16 PM
#8
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Location: Lethbridge, Alberta
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Right now I have a 10min hwy drive but I'm plannin on moving into town so 4.10s sound pretty good. 4.10s it is!
Thanks everyone for talking me into 4.10's!
When the weather gets better I'll plan on gettin some FRPP cogs and throwin em in.
02-21-2009, 08:13 PM
#9
CMOC Veteran
Join Date: Apr 2007
Location: vancouver island
Posts: 241
I did 3.73's in mine.... she hums along quite nicely now....
but I'm doing 1800 - 2000 on the highway now...
4.10s are great if you're running an auto... but not a stick IMO.... makes innercity driving a little to squirrely if you've got a loose driving surface and a heavy foot.
but I'm doing 1800 - 2000 on the highway now...
4.10s are great if you're running an auto... but not a stick IMO.... makes innercity driving a little to squirrely if you've got a loose driving surface and a heavy foot.
02-21-2009, 08:22 PM
#10
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Location: Ontario
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But you have a pushrod motor where the torque is down low,that is one of the 5.0L's forte .Modular motors make **** for torque down low,more like closer to 3000 grand before we got torque!
That is why the modular motor family needs a steeper gear.
.Modular motors make **** for torque down low,more like closer to 3000 grand before we got torque! That is why the modular motor family needs a steeper gear.
