6.4 Hemi
Fleet Mechanic
Joined: Dec 2016
Posts: 1,817
Likes: 543
From: Florida
I just don't get it.
Cross-Country
Joined: Aug 2018
Posts: 86
Likes: 3
I researched and test drove the 6.4 Hemi. Liked it fine but there were some questions about needing premium fuel and availability of engine oil. Decided I could get same or better performance from the 6.2 with regular gas and motor craft oil I can buy at Wal-Mart.
Fleet Mechanic
Joined: Oct 2003
Posts: 1,371
Likes: 10
From: Green Springs, OH
HST were you on the Ram forum? User name sounds familiar is all. I too switched from a 2015 Ram 6.4. I chronicled it on here and there. One of my posts was buried on the Ram forum. They didn't like me raving about the new truck I guess.
Hotshot
Joined: Jun 2003
Posts: 12,343
Likes: 4,368
From: SW VA
I've been on the Cummins Forum since 2009. They are an interesting bunch in the 4th Gen section...lots of crotchety old guys who like to gang up and name-call on anyone who has a different opinion than them. And they get the support of the moderators egging them on!
FTE is a gentleman's club compared to them. I enjoy the respectful conversations here vs. the smart-a remarks and personal attacks over there.
That said, I had '07 2500 with the 5.7L Hemi, and it was a great truck. The engine was fantastic...but the transmission was horrible (5R45 ?).
I did test drive a 2015 Ram with the 6.4L in it. The engine had the worst lifter rattle on start-up I have ever heard, and after researching it...it was normal! Not for me it ain't. The engine felt good, but again, the transmission ruined it. I'm not sure what gear ratio it had...most likely 3.73.
FTE is a gentleman's club compared to them. I enjoy the respectful conversations here vs. the smart-a remarks and personal attacks over there.
That said, I had '07 2500 with the 5.7L Hemi, and it was a great truck. The engine was fantastic...but the transmission was horrible (5R45 ?).
I did test drive a 2015 Ram with the 6.4L in it. The engine had the worst lifter rattle on start-up I have ever heard, and after researching it...it was normal! Not for me it ain't. The engine felt good, but again, the transmission ruined it. I'm not sure what gear ratio it had...most likely 3.73.
Senior User
Joined: Oct 2017
Posts: 319
Likes: 4
I've been on the Cummins Forum since 2009. They are an interesting bunch in the 4th Gen section...lots of crotchety old guys who like to gang up and name-call on anyone who has a different opinion than them. And they get the support of the moderators egging them on!
FTE is a gentleman's club compared to them. I enjoy the respectful conversations here vs. the smart-a remarks and personal attacks over there.
That said, I had '07 2500 with the 5.7L Hemi, and it was a great truck. The engine was fantastic...but the transmission was horrible (5R45 ?).
I did test drive a 2015 Ram with the 6.4L in it. The engine had the worst lifter rattle on start-up I have ever heard, and after researching it...it was normal! Not for me it ain't. The engine felt good, but again, the transmission ruined it. I'm not sure what gear ratio it had...most likely 3.73.
FTE is a gentleman's club compared to them. I enjoy the respectful conversations here vs. the smart-a remarks and personal attacks over there.
That said, I had '07 2500 with the 5.7L Hemi, and it was a great truck. The engine was fantastic...but the transmission was horrible (5R45 ?).
I did test drive a 2015 Ram with the 6.4L in it. The engine had the worst lifter rattle on start-up I have ever heard, and after researching it...it was normal! Not for me it ain't. The engine felt good, but again, the transmission ruined it. I'm not sure what gear ratio it had...most likely 3.73.
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Cargo Master
Joined: Jan 2004
Posts: 2,424
Likes: 697
From: Minnesota
I really wonder why "everyone" is so afraid of the deeper gear sets. I'm getting 16 mpg with my F250 6.2 with 4.30's in daily rural driving (55 mph 2 lane roads). It get 17 mpg at 65 mph on freeway trips; 16+ at 70 mph. And the deep gears help with pulling the 5th wheel. IMO, deep gear sets are a no brainer.
More Turbo
Joined: Apr 2007
Posts: 631
Likes: 13
From: Southern Ontario Canada
The 6.2 is the best gasser out there bar none. I have had an F250 with it and also have a GM 6.0 work truck, the 6.0 is a great engine but it’s nothing compared to the 6.2 and bulletproof Ford trans. The dudge 6.4 is a wannabe combo.
Senior User
Joined: Oct 2017
Posts: 319
Likes: 4
I really wonder why "everyone" is so afraid of the deeper gear sets. I'm getting 16 mpg with my F250 6.2 with 4.30's in daily rural driving (55 mph 2 lane roads). It get 17 mpg at 65 mph on freeway trips; 16+ at 70 mph. And the deep gears help with pulling the 5th wheel. IMO, deep gear sets are a no brainer.
Postmaster
Joined: Aug 2015
Posts: 3,146
Likes: 32
From: Maryville, TN
Originally Posted by cattaco
I can't get anywhere near the mileage you get with my 6.2 with 4.30's. I do almost exclusively rural roads and highways and I don't average 14 mpg. My best tank was 15.6 mpg and it was almost exclusively 45-55 mph. Highway at 65 mph i get 13.5-14mpg.
Senior User
Joined: Oct 2017
Posts: 319
Likes: 4
I get what you're getting on the highway with 4.88's and 37's in a ccsb. To much goes into the average to compare. The biggest thing is driving style, but you have to take into consideration elevation, terrain, local fuel supply, wheel base, temps, tread design and so much more. Even with a tire weighing more than double, and 5.5 inches bigger, I only lost about 1.5 mpg from 3.73s. Dads regular cab 4.30 truck gets 14 in town and 17 on the highway with stock tires.
Postmaster
Joined: Aug 2015
Posts: 3,146
Likes: 32
From: Maryville, TN
I don't know what to tell you Cat. My daily average was in the low 10's, but that was a fairly short commute with numerous red lights and frustrating afternoon traffic. When I moved and added 15 miles of prime mpg condition to my commute, it jumped to 12. And that included 20-30 minutes of idle time each day in the school pick up line. I recently made a 264 mile trip to pick up my new gas saver. Pulling an aluminum car float and picking up a 2400 lbs car, I averaged 11.8 mpg. The bed was also half full of well seasoned firewood I hadn't had a chance to unload yet. That's 65-75 mph on the interstate using cruise and manual mode locked into 5th most of the trip back. I was headed up i75 from south of Knoxville TN to London KY, so lots of hills and a decent grade up Jellico mountain. To keep this thread on track, I can't see the hemi doing any better than that, especially with its transmission. I did hear one pull out from the gas station the other day with aftermarket exhaust. It sounded pretty good.
Senior User
Joined: Oct 2017
Posts: 319
Likes: 4
I don't know what to tell you Cat. My daily average was in the low 10's, but that was a fairly short commute with numerous red lights and frustrating afternoon traffic. When I moved and added 15 miles of prime mpg condition to my commute, it jumped to 12. And that included 20-30 minutes of idle time each day in the school pick up line. I recently made a 264 mile trip to pick up my new gas saver. Pulling an aluminum car float and picking up a 2400 lbs car, I averaged 11.8 mpg. The bed was also half full of well seasoned firewood I hadn't had a chance to unload yet. That's 65-75 mph on the interstate using cruise and manual mode locked into 5th most of the trip back. I was headed up i75 from south of Knoxville TN to London KY, so lots of hills and a decent grade up Jellico mountain. To keep this thread on track, I can't see the hemi doing any better than that, especially with its transmission. I did hear one pull out from the gas station the other day with aftermarket exhaust. It sounded pretty good.