4.30 Gears, Why?
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Junior User
Joined: Feb 2006
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4.30 Gears, Why?
Why did ford start offering 4.30 gears instead of the 4.10's they always offered before that? What is the logic behind the 4.30 ratio, which I think started with the 3v modular V10?
Is this some magic ratio for these motors? Why isn't the new 6.2 gas motor offered with 4.10's?
Gman
Is this some magic ratio for these motors? Why isn't the new 6.2 gas motor offered with 4.10's?
Gman
Senior User
Joined: Jul 2006
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My experience exactly. The gear change from 373s to 430s was best mod I ever did to my '99 V10 Scab, 2WD.
Junior User
Joined: Apr 2005
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From: Castle Rock, CO
The 4.30s came in with the V10 in '99. From 99-04 the 2V V10s were 3.73 standard, 4.30 optional. From 05-10 the 3V V10s were 4.10 standard, 4.30 optional. The move to the standard 4.10 was in part, I think, to offset the larger factory tire sizes introduced in 2005.
Hotshot
Joined: Mar 2007
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From: Pa
Because the 3.73s suck the big one in a gasser. I would have made 4.30s standard in all gasser 250 and 350 trucks made 99' and later. I'd rather see only 4.30s and 4.56 available. The 4.56s will be good for people who tow near max GCWR and/or want to put slightly larger tires on.
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i saw a guy saying that he liked 3.08 gears lol.
honestly though, it probably seems a lot like having 4.56 gears except that you are down a gear... and first sucks.
one day, i'd like to swap 4.30 gears in, IMO a 5.4 NEEDS more gear than 3.73 to be useful for much other than just driving around.
even maneuvering around in dirt with a bed full of fire wood seems like a struggle some times.
honestly though, it probably seems a lot like having 4.56 gears except that you are down a gear... and first sucks.
one day, i'd like to swap 4.30 gears in, IMO a 5.4 NEEDS more gear than 3.73 to be useful for much other than just driving around.
even maneuvering around in dirt with a bed full of fire wood seems like a struggle some times.
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Postmaster
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From: Richmond BC
Because the 3.73s suck the big one in a gasser. I would have made 4.30s standard in all gasser 250 and 350 trucks made 99' and later. I'd rather see only 4.30s and 4.56 available. The 4.56s will be good for people who tow near max GCWR and/or want to put slightly larger tires on.
agreed..
the V10 and 3:73's is a AWFUL mix.. should never have been avialable if you ask me..
4:30's are a great starting point, should be a option for above that really.
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Laughing Gas
Joined: Sep 2008
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From: Central NJ
At the risk of being accused of hijacking a thread, I am about to order a 450 and was wondering if it is better to go 4:30 or 4:10 This will be a steak body work truck pulling 12k on a regular basis plus maybe 2-3 ton in the back. And a plow truck. I'm thinking 4:30's am I right?
FTE Leadership Emeritus
Joined: Sep 2000
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From: Stephensville WI
Could you please name your source on this? AFAIK the axle "parts" are the same regardless of the factory gearing.
Hotshot
Joined: Mar 2007
Posts: 10,101
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From: Pa
At the risk of being accused of hijacking a thread, I am about to order a 450 and was wondering if it is better to go 4:30 or 4:10 This will be a steak body work truck pulling 12k on a regular basis plus maybe 2-3 ton in the back. And a plow truck. I'm thinking 4:30's am I right?
FTE Leadership Emeritus
Joined: Sep 2000
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From: Stephensville WI
At the risk of being accused of hijacking a thread, I am about to order a 450 and was wondering if it is better to go 4:30 or 4:10 This will be a steak body work truck pulling 12k on a regular basis plus maybe 2-3 ton in the back. And a plow truck. I'm thinking 4:30's am I right?
With an F-450 and a diesel engine, I would select the 4.10 ratio. If gas engine, the 4.30 ratio. Why? Because the diesel engine has more low end torque.
