question about gears

[05singlecabHEMI]

with the truck retired, i feel like its time to get new gears. right now i have 3.55 gears but want to get 3.92.
how much faster does it feel? is the top end a lot slower?
whats the best brand/ where to buy?
also what is an average price to pay to put them in?
any other advice would be appreciated.

 

[TheSatinPumpkin]

Wont lose any top end with that small ratio change. OEM, Motive, Yukon are good options for that ratio.

 

[05singlecabHEMI]

what about 4.10? does that involve grinding the diff out?

 

[ST-8]

I would do 4.10s you will love it

 

[05singlecabHEMI]

does it requre grinding the differential out at all? i know with 4.56 you do. just cant remember if the 4.10 you have to

 

[TheSatinPumpkin]

Your good with the 4.10s

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[ATXHEMI]

I thought it was only 06+ that had to have the grinding done.

 

[bloombloom88]

I thought it was only 06+ that had to have the grinding done.

2011+ I believe

 

[05singlecabHEMI]

sweet, then ill probably get 4.10s. just need to find an installer.

 

[ATXHEMI]

It was the 06+

06/07 Gear Swap BEWARE - Hemi Truck Club

 

[ST-8]

Yea singlecab my 04 has 4.56s no grinding here. But I would do 4.10s if I were to do it again. I'm gonna be dropping down tire sizes so it sure to make my highway mpg worse.

 

[Barracuda556]

I have 3.92 oem in my Ram. I'd like 4.56 but I do a lot of highway driving and don't want to kill my mpg. I'm happy with my gears, but 4.10s might be fun : )

 

[HemiLonestar]

3.55 to 3.92 you may not feel much difference. Get at least a 4.10

 

[moparman]

If i were to do it again, i would go 4.10 over the 4.56 i have now. The 4.56 is fun but at 70-75 mph the tach is around 3300 rpm. I can watch the gas gauge move. My truck is a very late build 05 so i had to grind the housing but i believe early 05 and down no grinding is needed. Grinding the housing was the worst part of the whole install

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[truckin151]

Man I love my 4.56's. Mpgs haven't taken a hit either. No grinding on mine either

 

[05singlecabHEMI]

thanks for the input guys. really appreciate it.
dont think i want to go with 4.56. truck still does a lot of highway driving. im gonna start looking for a shop to do it. then i will be putting in my order fpr 4.10s

 

[truckin151]

On long highway trips, I still average 17-18mpg doing mostly 70-75mph. 4.56's are not a bad gear for highway driving.

 

[dodge dude94]

If you can stomach the cost, get a locker too.

 

[dmacell1]

Ive had the 3.92 in my truck for years but needed more traction so im switching out the whole rearend with a brand new 3.92 limited slip one. The unit cost me $2,250 and im getting it installed on tuesday. The labor is going to run about $300 more just to give you an idea how much it would cost totally new. A good shop may be able to redo yours for half that but it takes alot of skill to set one up and shim it right so it lasts.
4.10 may be a better ratio for a normally aspirated truck but with my supercharger it is overkill for regular street driving.

 

[truckin151]

Damn, mine was $900 out the door for a set of 4.56's + install & 3yr warranty on the stock lsd. Would **** a brick if it costed $2500....