Maximizing Power of 6.4 Hemi

[JustNtime]

I'm looking for advice about how to get more power out of my 6.4 Hemi. I tow a 34 foot 5th wheel around the Rockies and feel like I'm killing my truck. It pulls well but seems stressed all the time and averages 6 miles per gallon. Any suggestions on a tuner, intake etc? It's a 2016 with 53K miles so I'm not worried about voiding warranty.

 

[RamHondo]

nEED A TUNE.
HP TUNERS @ https://www.facebook.com/peitzperformance/
OR
Hemi fever, or Moe's

 

[tjfdesmo]

I have one and pull heavy, too. IMHO you are not going to gain enough to make a worthwhile difference for pulling heavy. The answer is a Cummins.

 

[RamHondo]

Agree on Cummins!

But a Good Tune for towing is the way to go. Also get rid of factory muffler, or add catback exhaust system, personal muffler delete is the way to go...

 

[RainDesert]

I'm looking for advice about how to get more power out of my 6.4 Hemi. I tow a 34 foot 5th wheel around the Rockies and feel like I'm killing my truck. It pulls well but seems stressed all the time and averages 6 miles per gallon. Any suggestions on a tuner, intake etc? It's a 2016 with 53K miles so I'm not worried about voiding warranty.

What gears do you have?

 

[22hemi13]

Ouch. The ole hemi struggles in altitude. Well any gasser will. I don’t think anything will overcome that mod wise.... and I know this has been said and I’m sure last thing ya wanna hear but a Cummins is the true answer.

 

[MADDOG]

My 6.4L HEMI really woke up with a cold air intake, freer flowing exhaust, a programmer and a custom tune.

I'd do the same thing if I bought another one.

 

[Marine Les]

Put blower on it or lower gears.

 

[Randy g3 hemi]

Please don't change your gears,just more fuel! whipple has a supercharger kit already for your truck. It's a screw blower,which means when you touch the throttle from idle
you are in boost!! When you are at 10,000 feet, you have the same power as you do at see level!!!! Just go to whipped superchargers .com and check it out. If you have any questions, just text me. I'm not always on the site.
Hope this help you and others on this great web site.
Keep MOPAR-ing on

 

[Randy g3 hemi]

SORRY!!!! I forgot to add this part! Customer's have reportedly gotten fuel gain from. City driving 2-3 mpg, over the road.1-3@75 miles an hour, and the big one. Pulling little over 10,000lb with 3:73 gears 2-6 miles per gallon!!
At all elavations! Most all off these trucks have full exhaust to just muffler delete on them. [email protected]

 

[McBroom]

The Whipple Supercharger website does not show anything for our 6.4 Hemi.
The 5.7 Hemi yes they have a couple of kits.



I love my truck!
Blue Mule 18 Ram 4x4 C/C
Tradesman Power Wagon

 

[Hemi_Express2013]

I would contact a tuner and see if you could get a reconfigured calibration to more closely resemble the SRT 6.4. Damn shame they calibrated those 6.4 the way they did. Neutered!

 

[joshuaeb09]

Gears are going to be your best bang for buck to get more tq multiplication, but it's still a gasser towing heavy and you might see noticeably worse unloaded MPG depending on the gear selection. There are a few threads in the HD section about regearing that might help you decide if you want to go down that route.

I would contact a tuner and see if you could get a reconfigured calibration to more closely resemble the SRT 6.4. Damn shame they calibrated those 6.4 the way they did. Neutered!

The BGE configuration in the trucks is a different animal than the 6.4 Apache so a tune alone won't make up the difference. The truck configuration has lower compression and was designed for durability over raw output numbers. That being said the BGE block/heads are better and make an awesome base for big power with the right parts. Kinda makes me wish I had waited for an '18 when the cars moved to the BGE block casting while retaining the rest of the SRT bits.

 

[ReefRaider]

https://www.procharger.com/blog/2500-ram-truck-owners-procharger-boost-has-arrived

 

[Hemi_Express2013]

Gears are going to be your best bang for buck to get more tq multiplication, but it's still a gasser towing heavy and you might see noticeably worse unloaded MPG depending on the gear selection. There are a few threads in the HD section about regearing that might help you decide if you want to go down that



The BGE configuration in the trucks is a different animal than the 6.4 Apache so a tune alone won't make up the difference. The truck configuration has lower compression and was designed for durability over raw output numbers. That being said the BGE block/heads are better and make an awesome base for big power with the right parts. Kinda makes me wish I had waited for an '18 when the cars moved to the BGE block casting while retaining the rest of the SRT bits.

You are 100% correct! 6 bolt mains! That should support some real power put down.