Changing Gears

[Krazy8twofour]

I’m changing my gears on my 2014 Ram, from 3.42 to 4.56.

Anyone know if that will effect my spark plug update and the way the transmission will handle with memory relearn?


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[SyN]

I don't have a honest / truthful answer to your questions - but if you don't mind sharing - in a round up fashion the cost of this total modification?

I really was going to look into doing a swap to either 3:73 or 4:10 after the JUDGE receives the full DRD treatment. (Finding a honest / Reputable shop in my area will be the hardest challenge)

Though my common sense brain cell - tells me you would think with that broad of gear change - would have some effect on the transmission shift points... I would think a serious relearn would be in the works - maybe line psi needs to be tweaked as well?

In the past - talking with 2500 Ram 6.4L owners who re-geared - claimed it changed the whole attitude /personality of their trucks...

Especially when towing - I don't recall them talking about having to do anything special - when it come to out side programming.

(Maybe a transmission 're-learn was all that was needed)?

Ok! I apologize - SyN (Shut the Up)!

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[cumminsdieselfreak]

I don't have a honest / truthful answer to your questions - but if you don't mind sharing - in a round up fashion the cost of this total modification?

I really was going to look into doing a swap to either 3:73 or 4:10 after the JUDGE receives the full DRD treatment. (Finding a honest / Reputable shop in my area will be the hardest challenge)

Though my common sense brain cell - tells me you would think with that broad of gear change - would have some effect on the transmission shift points... I would think a serious relearn would be in the works - maybe line psi needs to be tweaked as well?

In the past - talking with 2500 Ram 6.4L owners who re-geared - claimed it changed the whole attitude /personality of their trucks...

Especially when towing - I don't recall them talking about having to do anything special - when it come to out side programming.

(Maybe a transmission 're-learn was all that was needed)?

Ok! I apologize - SyN (Shut the Up)!

East Coast Gear Supply quoted me just over $2600 OTD for them to do it.

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[Krazy8twofour]

I don't have a honest / truthful answer to your questions - but if you don't mind sharing - in a round up fashion the cost of this total modification?

I really was going to look into doing a swap to either 3:73 or 4:10 after the JUDGE receives the full DRD treatment. (Finding a honest / Reputable shop in my area will be the hardest challenge)

Though my common sense brain cell - tells me you would think with that broad of gear change - would have some effect on the transmission shift points... I would think a serious relearn would be in the works - maybe line psi needs to be tweaked as well?

In the past - talking with 2500 Ram 6.4L owners who re-geared - claimed it changed the whole attitude /personality of their trucks...

Especially when towing - I don't recall them talking about having to do anything special - when it come to out side programming.

(Maybe a transmission 're-learn was all that was needed)?

Ok! I apologize - SyN (Shut the Up)!

Old thread- but I did swap my gears to 4.56 running 37x20 tires.

It did cost me about 4500.00 plus a Ram Air diff cover was right at 5k.

If a person can find a smaller garage/shop, that doesn’t have the higher overhead, that’s the way to go.

My opinion on the swap?

I could’ve went to 4:30 with this tire size and been just as happy.

The 4:56 do have a higher RPM at higher speeds, which is louder and takes a minute to get used too.

I have a 5” aluminum drive shaft that earns me about exceeding 110MPH, so I don’t push it very hard over 90.

No need.

If I was gonna do it again- I’d do 4:30.

4.56 gears- Wehrli 2nd Gen swap with fleece exhaust brake-fleece power flow pump- 5” exhaust- 37x20 Toyo ATIII- 625 ARP- monster Air Ram- Fox shocks 2.0- BDS dual stabilizer- DRD cured

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[DDP]

I’m changing my gears on my 2014 Ram, from 3.42 to 4.56.

Anyone know if that will effect my spark plug update and the way the transmission will handle with memory relearn?


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Most of the time the gear change does not require a retune. Also, may i ask why 4.56? Is it for bigger tires or do you tow extremely heavy?

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[Krazy8twofour]

I’m changing because I’m running 35” tires and going to 37. My 2008 came with 3.73’s and didn’t do too bad with 35”. I firmly believe dodge has the gears lowered down so much for fuel economy and stock tires. I do tow a skid steer and attachments around, but only periodically. I have read a few articles about getting the power back to the ground and taking the stress off the tranny with the Oversized tires


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[SyN]

CDF:

When it comes time & If choose to do a similar swap - I will have to do some searching around the metro area - locally is a joke when it comes to dependable /trust worthy mechanical work being done.

I guess I need to research to see what other gear ratios are available for the 11.5" AAM.

Keeping the 6.7L within its RPM sweet spot while towing @ (60-65mph) is something I need to look at as well...

Thinking about it (Replacing the anti-slip with a locker design might be a good choice while this Work is being done). -----> Shake that $$$$ Tree!

I am keeping my OEM - 20" wheels.

So 3:73 or 4:10 might be better suited for my needs?

This is a few years down the road - so I have plenty of time to gather ideas & opinions...

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[cumminsdieselfreak]

CDF:

When it comes time & If choose to do a similar swap - I will have to do some searching around the metro area - locally is a joke when it comes to dependable /trust worthy mechanical work being done.

I guess I need to research to see what other gear ratios are available for the 11.5" AAM.

Keeping the 6.7L within its RPM sweet spot while towing @ (60-65mph) is something I need to look at as well...

Thinking about it (Replacing the anti-slip with a locker design might be a good choice while this Work is being done). -----> Shake that $$$$ Tree!

I am keeping my OEM - 20" wheels.

So 3:73 or 4:10 might be better suited for my needs?

This is a few years down the road - so I have plenty of time to gather ideas & opinions...

To me, it just depends on how much towing/weight you do in addition to how big of a tire you plan to run.

I tow a 7x14 aluminum enclosed trailer loaded down with a sxs and gear.

I have a manual with 3.42's and 35" tires, 4.10s are my first choice but if I had 37s with everything I said above, 4.56s would be something to consider.

Whether coming from 3.42 or 3.73s, going to 4.10s on these trucks makes a night and day difference.

Also, if your truck is a 4x4 you can't just change the gearing in the rear end, front has to be changed too, a lot of people don't know that when inquiring about parts.

Just my thoughts, take it for what it's worth.

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[SyN]

Yes I did know the front differential gears have to be replaced as well.

If I knew the Wife (Boss) - was going to want or only desire to RV locally - say 50 to 200 miles distance - I would be content (stay with the 3:42s) ...

But I have a gut feeling - once we begin our adventures - I feel she will have temptations of visiting S Texas & Arkansas & maybe Colorado & New Mexico - so I'm kind of going outside the box & planning ahead...

I'm by no means thinking the 3:42s are a poor choice all around - since I was told by my service mgr " That the 3:42 gearing was selected mainly to keep the RPMs within the ideal torque range of the 6.7L while towing at highway speed & of course for better mpg...

He did say after that - if I'm going to be towing close to my max most of the time - especially @ higher elevations...
The 3:73 or 4:10 might be better options & make life much easier on my 6.7L & 68RFE...

Re-gearing will definitely be my last drive train modification performed...

Air-bags & upgraded brakes will happen first then possibly a call to DRD... Then look into re-gearing... If my 68RFE keeps a positive attitude...

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[cumminsdieselfreak]

Yes I did know the front differential gears have to be replaced as well.

If I knew the Wife (Boss) - was going to want or only desire to RV locally - say 50 to 200 miles distance - I would be content (stay with the 3:42s) ...

But I have a gut feeling - once we begin our adventures - I feel she will have temptations of visiting S Texas & Arkansas & maybe Colorado & New Mexico - so I'm kind of going outside the box & planning ahead...

I'm by no means thinking the 3:42s are a poor choice all around - since I was told by my service mgr " That the 3:42 gearing was selected mainly to keep the RPMs within the ideal torque range of the 6.7L while towing at highway speed & of course for better mpg...

He did say after that - if I'm going to be towing close to my max most of the time - especially @ higher elevations...
The 3:73 or 4:10 might be better options & make life much easier on my 6.7L & 68RFE...

Re-gearing will definitely be my last drive train modification performed...

Air-bags & upgraded brakes will happen first then possibly a call to DRD... Then look into re-gearing... If my 68RFE keeps a positive attitude...

Ol buddy my guess is the EPA had their hand in 3.42s.

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