4.56 Gear Question
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Joined: Jan 2005
Posts: 852
Likes: 4
From: EULESS TEXAS DFW
RE: 4.56 Gear Question
ORIGINAL: rayk3
Now that I'm totally confused, my son has a 2004 4.7 with the standard stock gears, I have a 2002 4.7 that I ordered with 3.92 gears, his fuel mileage on the highway is better than mine. So I still don't see how going to a lower gear ratio 4.56 will improve mileage. Someone's math is way off.. I have more traction when I nail it, he spins the tires.. This relates to my other post,, lower gears better traction - worse fuel mileage, higher gears, less traction - better fuel mileage. I 'm only going on what I have seen and calculated..
Now that I'm totally confused, my son has a 2004 4.7 with the standard stock gears, I have a 2002 4.7 that I ordered with 3.92 gears, his fuel mileage on the highway is better than mine. So I still don't see how going to a lower gear ratio 4.56 will improve mileage. Someone's math is way off.. I have more traction when I nail it, he spins the tires.. This relates to my other post,, lower gears better traction - worse fuel mileage, higher gears, less traction - better fuel mileage. I 'm only going on what I have seen and calculated..
SPEED SAFE, AIR RAM
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Joined: Jan 2005
Posts: 852
Likes: 4
From: EULESS TEXAS DFW
RE: 4.56 Gear Question
Here is a ton of real world responses by several people who have 4.56's!!
Insert Dodge talk in the *** space....
http://www.dodgetalk.com/forums/show...ght=4.56+gears
http://www.dodgetalk.com/forums/show...ght=4.56+gears
http://www.dodgetalk.com/forums/show...ght=4.56+gears
http://www.dodgetalk.com/forums/show...ght=4.56+gears
http://www.dodgetalk.com/forums/sear...earchid=363011
SPEED SAFE, AIR RAM
Insert Dodge talk in the *** space....
http://www.dodgetalk.com/forums/show...ght=4.56+gears
http://www.dodgetalk.com/forums/show...ght=4.56+gears
http://www.dodgetalk.com/forums/show...ght=4.56+gears
http://www.dodgetalk.com/forums/show...ght=4.56+gears
http://www.dodgetalk.com/forums/sear...earchid=363011
SPEED SAFE, AIR RAM
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Joined: Jan 2005
Posts: 852
Likes: 4
From: EULESS TEXAS DFW
RE: 4.56 Gear Question
ORIGINAL: rayk3
Now that I'm totally confused, my son has a 2004 4.7 with the standard stock gears, I have a 2002 4.7 that I ordered with 3.92 gears, his fuel mileage on the highway is better than mine. So I still don't see how going to a lower gear ratio 4.56 will improve mileage. Someone's math is way off.. I have more traction when I nail it, he spins the tires.. This relates to my other post,, lower gears better traction - worse fuel mileage, higher gears, less traction - better fuel mileage. I 'm only going on what I have seen and calculated..
Now that I'm totally confused, my son has a 2004 4.7 with the standard stock gears, I have a 2002 4.7 that I ordered with 3.92 gears, his fuel mileage on the highway is better than mine. So I still don't see how going to a lower gear ratio 4.56 will improve mileage. Someone's math is way off.. I have more traction when I nail it, he spins the tires.. This relates to my other post,, lower gears better traction - worse fuel mileage, higher gears, less traction - better fuel mileage. I 'm only going on what I have seen and calculated..
Yours has the 45RFE with the .75 overdrive and 3.92's... this gives you a 2.94 overall gear ratio.
Hey Ray, I just did the math again... your son has a 2004 with a 545RFE 75/67 OD and what rear gear?
If he has the:
3.55's
3.55x. 75/.67= 2.66/2.37
3.92's
3.92x.75/.67= 2.94/2.62
Im willing to bet you both have the 3.92 rear gears... if not then there are other factors between the way your trucks are set up and driven.
Transmission gear x rear gear = overall gear ratio
SPEED SAFE, AIR RAM
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Joined: Jan 2005
Posts: 852
Likes: 4
From: EULESS TEXAS DFW
RE: 4.56 Gear Question
You need to add "DODGETALK" in place of the **** because this site does not let us post links to other forums... Kinda stupid if you ask me... This is the only site that does not let you post a link to another forum.... Children in charge I guess!
SPEED SAFE, AIR RAM
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Joined: Jan 2005
Posts: 852
Likes: 4
From: EULESS TEXAS DFW
RE: 4.56 Gear Question
ORIGINAL: AIR RAM
You need to add "DODGETALK" in place of the **** because this site does not let us post links to other forums... Kinda stupid if you ask me... This is the only site that does not let you post a link to another forum.... Children in charge I guess!
SPEED SAFE, AIR RAM
You need to add "DODGETALK" in place of the **** because this site does not let us post links to other forums... Kinda stupid if you ask me... This is the only site that does not let you post a link to another forum.... Children in charge I guess!
SPEED SAFE, AIR RAM
LOL it did it again.... LOL what a JOKE this site is! OK PUT in D_O_D_G_E_T_A_L_K With out the "_" in the spot where they xxx out the forum name.... I think they are afraid you will like that site more.... They D_O_D_G_E_T_A_L_K does NOT block links and there is normally quicker responses to your questions.
SPEED SAFE, AIR RAM
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Joined: Jan 2005
Posts: 852
Likes: 4
From: EULESS TEXAS DFW
RE: 4.56 Gear Question
ORIGINAL: HankL
There is not a single MPG test in any of those posts
just someone making wild claims
with no facts.
There is not a single MPG test in any of those posts
just someone making wild claims
with no facts.
But I am glad you took the time to scroll through my past post... perhaps you will learn somthing.
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Joined: Jan 2005
Posts: 852
Likes: 4
From: EULESS TEXAS DFW
RE: 4.56 Gear Question
ORIGINAL: WingViper
So say I enjoy smoking a good import at the light now and again, should I stick with 3.92 or upgrade to a 4.56?
So say I enjoy smoking a good import at the light now and again, should I stick with 3.92 or upgrade to a 4.56?
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