|
03-27-2015, 06:20 PM
|
#1
|
Senior Member
Join Date: Sep 2013
Location: Waynesville Georgia
Posts: 1,307
|
Dodge 4.7 vs. 5.7 Hemi
We currently have a 2010 4.7 with 3.55 gears,5 speed and towing now at our max.6,000 # How much better is the Hemi with the same 3.55 ? I know they have changed the trans. a lot, 5speed,6speed, on and on.
Looking at a 2012, hemi, 3.55 gears and 6 speed tans.
Jim
|
|
|
|
Join the #1 RV Forum Today - It's Totally Free!
iRV2.com RV Community - Are you about to start a new improvement on your RV or need some help with some maintenance? Do you need advice on what products to buy? Or maybe you can give others some advice? No matter where you fit in you'll find that iRV2 is a great community to join. Best of all it's totally FREE!
You are currently viewing our boards as a guest so you have limited access to our community. Please take the time to register and you will gain a lot of great new features including; the ability to participate in discussions, network with other RV owners, see fewer ads, upload photographs, create an RV blog, send private messages and so much, much more!
|
03-27-2015, 07:29 PM
|
#2
|
Senior Member
Join Date: Jul 2011
Location: Lexington NC
Posts: 1,952
|
In my opinion, night and day. The 4.7 is an awesome little motor. Smooth as glass and stout for a small motor, but when asked to move a full size truck with a good size rv it works it hard.
The 5.7 hemi is a stout motor. My wife's jeep grand cherokee has the 5.7. I had a 2012 ram mega cab 2500 4x4 with the 5.7 hemi. I pulled lots of weight with it and nary a problem. Obviously it's not a big block motor so some of the hills it will downshift but you will NEVER be the slow poke unless you are severely overloaded. Best of luck.
Chad
|
|
|
03-27-2015, 07:52 PM
|
#3
|
Junior Member
Join Date: Mar 2015
Posts: 16
|
I have a 2012 5.7 4wd haven't found anything it wouldn't pull. They have 390 hp
My wife has a 2007 Durango 4.7 auto 4wd
Also pulls great . Wouldn't own any other
Brand auto. Have a 454rv only because
Couldn't find a class a with a 5.7
|
|
|
03-28-2015, 12:42 AM
|
#4
|
Senior Member
Join Date: May 2014
Location: Huntsville, AL/Helen, GA
Posts: 1,566
|
Modern 6 cylinder truck engines are pushing 300 hp, and that's technically enough power to tow most lighter RV's. Unfortunately, the torque of such engines comes with higher rpm's--which is not good for heavy towing. The Pentastar V-6 is okay for towing bass boats, however they're aerodynamic and relatively light trailers.
You'd do better to move on to the hemi for towing your RV.
|
|
|
03-28-2015, 05:52 AM
|
#5
|
Senior Member
Join Date: Sep 2013
Location: Waynesville Georgia
Posts: 1,307
|
I heard somewhere the Hemi"s power band is only in the higher rpm's 4,000 plus, true/false ????
Jim
|
|
|
03-28-2015, 12:13 PM
|
#6
|
Senior Member
Outdoors RV Owners Club
Join Date: Oct 2014
Posts: 3,539
|
Yup, the Hemi will rev a lot. They are also fairly thirsty at the higher revs and you may not like hearing it. It will not hurt the motor and they pull pretty well but the torque band is pretty high up. Not my first choice for a gas tow vehicle but better than what you have now.
|
|
|
03-30-2015, 03:41 AM
|
#7
|
Senior Member
Join Date: Apr 2014
Posts: 122
|
Keymastr what would your first choice be.
|
|
|
03-30-2015, 01:27 PM
|
#8
|
Senior Member
Join Date: Jul 2012
Posts: 470
|
Spoke with a guy who has an 09 1500 hemi. Claims it pulled his 9k TT up a 6% grade at 70mph and didn't reach 3k RPMs. Now I don't know how true that is but it would be impressive if is.
|
|
|
03-30-2015, 06:49 PM
|
#9
|
Senior Member
Join Date: Sep 2011
Location: Arkansas
Posts: 2,500
|
I am looking at the newer 6.4 Hemi... It is a "made for truck" engine... Go read about it... For me, I'll be buying a new (er) truck in the next couple years,,, hopefully to pull a rv with... It will either be a 6.4 Hemi or Cummins.... I presently own a 04 Grand Cherokee with the 4.7 V8... Haven't really towed anything with it, (nothing big) I am on the third water pump with 70K miles... GRRRRR (all New pumps) Other than that seems like a nice smaller V8... In a truck, you need a bigger motor than that.....
__________________
Monkey, pilot of a Great Dane hauler,
2015 Silverado 2500 Duramax/Alison 4x4 CrewCab 2016 Cougar 28SGS
1ST CAV
|
|
|
|
Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
|
|
Posting Rules
|
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts
HTML code is Off
|
|
|
|
» Recent Discussions |
|
|
|
|
|
|
|
|
|
|
|
|
|