4.10 vs 4.56

[BLKDODGE04]

wasnt sure where to post this but im getting ready to get gears for my truck. debating on which set to go with, 4.10's or the 4.56's. what are your thougts? i dont plan on running any "huge" tires. i currently have 33's, possibly 35's in the future but nothing bigger than that.

 

[SmokedRam]

How much highway driving do you do @ above 60 mph?

 

[jbmobbs]

I have 456s nd i love em but not for alot of interstate driving. If u do alot of i-driving then id do 410s

 

[WhiteExpress]

I vote 4.56s. I ran them with 34" tires and I always wanted moar gear.

 

[03MopaRamman]

4.56's would make the 4.7 scream. No regrets here and I can still Peg 140 KPH on the Highway if I'm in a hurry with RPM's just under 3K (87 MPH). And being only 30 K over the speed Limit (18.6 MPH) the Cops won't take my Truck away on the spot, mind you I only due that if someone is giving Birth!

 

[Musclemckeester]

I agree, 4:10s if a lot of highway driving otherwise do 4:56s and hang on for the ride.

 

[TheSatinPumpkin]

Use this to get an idea on your RPM per tire size.

mph x gear ratio x 336
__________________ x gear ratio trans
Tire diameter



There was a nice improvement going from 3.55's to 4.10's but regret it and should of just went to 4.56's.

I eventually went to 4.56's after running 4.88's for 2 years. Miss the 4.88's but the 4.56's is a great medium for my setup.

 

[HemiLonestar]

If you have 3.92's you won't notice much of a difference going to 4.10's. If you have 3.55's then 4.10's will be good.

 

[SmokedRam]

Hit up BadHabit on here, he has 4.56 gears in his 4.7 truck.

 

[Hemi450hp]

I dont know any 4.7 owners that arent happy with 4.56's. Just try to keep your highway rpms under about 2200, and you will be fine on mileage.

 

[icywhite]

it boils down to like everyone said.. when i got mine loved'em now i work over an hour away and would like to have the 4.10s for gas other then that 4.56s all the way

 

[BLKDODGE04]

thanks for all the replies guys! 99% of my driving is under or right around 60. dont do much interstate driving. im leaning towards the 4.56's but was just curious what others thought. i have never changed gears in a vehicle, this is my first vehicle that i've owned and actually modded. im quite impressed with what a cai, sc tuner, and exhaust setup have done for power, i can only imagine what difference the gears will make.

 

[moparman33]

what is the rpm range for 4.10s versus 4.56s at 60mph? im running 285s right now but will be stepping up to 35's later this summer

 

[BLKDODGE04]

what is the rpm range for 4.10s versus 4.56s at 60mph? im running 285s right now but will be stepping up to 35's later this summer

im running the same size tires. i feel like i read somewhere when you switch from 3.55's to 4.56's you get an increase of around 300 rpm? someone correct me if im wrong...

 

[moparman33]

yeah ive got the stock 3.55 right now. and if its only an increase of around 300rpm then i can handle that. i just dont want to make the mistake of gettin 4.10 and regrettin it later wishin i got 4.56. at the sametime i want to be able to drive on the interstate and not rev in excess of 3500rpm just doin the speed limit

 

[TheSatinPumpkin]

im running the same size tires. i feel like i read somewhere when you switch from 3.55's to 4.56's you get an increase of around 300 rpm? someone correct me if im wrong...

See post 7 to get the rpm in od for your tire size.

Sent from my ASUS Transformer Pad TF700T using Tapatalk 2

 

[moparman33]

did some lookin around and found this. maybe this will help someone else
Lift Kits, Tires & Wheels by 4 Wheel Parts

 

[moparman33]

keep in mind like it says. it is 4th gear on a manual trans at 65 mph

 

[moparman33]

now my question for the people that have knowledge in this. i know i would rev higher than the chart(i have an automatic 4x4). just worried 4.56 would be a lil high with 33's runnin on the interstate. anyone with first hand experience with runnin this set up?

 

[TheSatinPumpkin]

again...see post # 7

4.10's
70mph x 4.10 x 336 = 96342
96342 / 33 = 2919
2919 x .67 = 1956
rpm = 1956

4.56's
70mph x 4.56 x 336 = 107251.2
107251.2 / 33 = 3250.03
3250.03 x .67 = 2177
rpm = 2177