DODGE RAM FORUM - Ram Forums and Owners Club! - Dodge Truck Forum

Go Back   DODGE RAM FORUM - Ram Forums and Owners Club! - Dodge Truck Forum > Dodge Ram Forum - General Discussion > 2010 Dodge Ram Forum


Notices

2010 Dodge Ram Forum For specific discussion of the new 2010 Dodge Ram!


Latest Vendor News
AutoAnything
Addictive Desert Designs!
Bayou Goat Mounts

Reply
 
Thread Tools
  #1  
Old 06-16-2010, 01:12 PM
caper10's Avatar
caper10 caper10 is offline
Dodge Ram Forum Newcomer
 
Join Date: Jun 2010
Location: Nova Scotia Canada
Posts: 17
Gender: Male
Vehicle: 2010 Ram1500 Quad Cab
Trim Level: Sport
Color: Mango Tango
Engine: 2009-2010 345ci (5.7L) Hemi V8 390hp 407lb/ft
Rep Power: 0
Rep:10
caper10 is on a distinguished road
Default Advice on Gear Ratio

I'm in the process of shopping for a 2010 Sport quad cab. I'm still a little up in the air on grar ratios, 355 or 392? The trusk will be mostly highway drive and i'll be buying a travel trailer in the next year or so. What is the difference in gas mileage, and will it make much of a difference in towing 355 VS 392.
__________________
Extang Solid , EGR Visors, Vision Warrior 17" winters with studded snows, Iron Cross HD , HBS 2.5"
Reply With Quote
Sponsored links
  #2  
Old 06-16-2010, 01:26 PM
jj ram's Avatar
jj ram jj ram is offline
Dodge Ram Forum Senior Member!
 
Join Date: May 2010
Location: Ottawa Ontario, Canada
Age: 40
Posts: 182
Gender: Male
Vehicle: 2010 Dodge Ram 4x4
Trim Level: SLT
Color: Flame Red
Engine: 2009-2010 345ci (5.7L) Hemi V8 390hp 407lb/ft
Rep Power: 0
Rep:16
jj ram is on a distinguished road
Default

Hi,
I was in the same boat as you, mostly highway and towing a travel trailer a couple times a summer. I went with the 3:55, mostly because that's what they had on the lot, but in the end I don't think you notice the difference that much. Since you are probably not towing all that much or racing your truck, I think you would benefit from the slighlt better gas mileage of the 3:55 on the highway.

Perhaps somebody with the 3:92 can tell you better, but I had them on my 04 Ram and I didn't notice it was that much of an improvement. mind you I had the 4.7L which sucked for towing....
__________________
"They will not force us, they will stop degrading use, they will not control us, we will be victorious" - Muse
Reply With Quote
  #3  
Old 06-16-2010, 01:33 PM
RamTech's Avatar
RamTech RamTech is offline
Dodge Ram Forum Senior Member!

 
Join Date: Nov 2009
Location: Johnson City, TN
Age: 44
Posts: 12,120
Gender: Male
Vehicle: 2004 Dakota Club Cab 4X4
Trim Level: SXT
Color: Bright Silver
Engine: 2002-2008 226ci (3.7L) Magnum/PowerTech V6 215hp 235lb/ft
Rep Power: 14
Rep:1824
RamTech has a brilliant futureRamTech has a brilliant futureRamTech has a brilliant futureRamTech has a brilliant futureRamTech has a brilliant futureRamTech has a brilliant futureRamTech has a brilliant futureRamTech has a brilliant futureRamTech has a brilliant futureRamTech has a brilliant futureRamTech has a brilliant future
Default

If it's heavier than a pop up camper, I'd go 3.92, especially if you're going to be in the mountains any.
Reply With Quote
  #4  
Old 06-16-2010, 09:10 PM
dafoot dafoot is offline
Dodge Ram Forum Senior Member!
 
Join Date: May 2010
Location: Bismarck, ND
Age: 52
Posts: 227
Gender: Male
Vehicle: 2011 Dodge Ram, 1500, Hemi
Trim Level: Laramie
Color: White
Rep Power: 0
Rep:16
dafoot is on a distinguished road
Default

I have 355s. My answer is....not sure. I pull a 5 to 6 thousand pound boat. Seams to pull ok. What I don't like is the tourqe converter going out of lock up on certain hills. (in 4th gear). I came from the Tundra with 410s. That truck never left lock up in 4th gear. Of course the rpms were higher in the Tundra. If I new the Ram would stay in lock up..I would go with the lower gears.
__________________
DAFOOT
Reply With Quote
  #5  
Old 06-16-2010, 09:46 PM
Raptor1000R's Avatar
Raptor1000R Raptor1000R is offline
Dodge Ram Forum Senior Member!
 
Join Date: Apr 2010
Location: Hillsdale, KS (30mi S. of Kansas City)
Posts: 80
Gender: Male
Vehicle: 2010 Ram 1500 4x4 Sport Crew
Trim Level: Sport, buckets, RER
Color: bright white
Engine: 2009-2010 345ci (5.7L) Hemi V8 390hp 407lb/ft
Rep Power: 0
Rep:10
Raptor1000R is on a distinguished road
Default

I suggest 392's. Your mileage won't suffer more than 1mpg on an "all highway" trip, and doubt you'd notice it otherwise. I went from 355's to 410's in an f150 and the highway mpg went down 1mpg, but the in town went up 1mpg. I saw it as a wash, but it pulled trailers awesome. It would basically not use OD with the 355's, but the 410's ran the same rpm at 75mph as the 355's in did w/o OD. I think 392's would be perfect. I sure wish my `10 had 392's, though I don't pull most of the time. The beef will prob. come down to you having to order 392's if you chose that route. I haven't seen any 09+ with 392's. Just my $.02
__________________
2010,15004x4,Hemi,Sport,White,Crew,CAI,Predator,Li ne-X,Truxedo Lo Pro,2"level kit,PE Powergate
Reply With Quote
  #6  
Old 06-16-2010, 09:52 PM
RamTech's Avatar
RamTech RamTech is offline
Dodge Ram Forum Senior Member!

 
Join Date: Nov 2009
Location: Johnson City, TN
Age: 44
Posts: 12,120
Gender: Male
Vehicle: 2004 Dakota Club Cab 4X4
Trim Level: SXT
Color: Bright Silver
Engine: 2002-2008 226ci (3.7L) Magnum/PowerTech V6 215hp 235lb/ft
Rep Power: 14
Rep:1824
RamTech has a brilliant futureRamTech has a brilliant futureRamTech has a brilliant futureRamTech has a brilliant futureRamTech has a brilliant futureRamTech has a brilliant futureRamTech has a brilliant futureRamTech has a brilliant futureRamTech has a brilliant futureRamTech has a brilliant futureRamTech has a brilliant future
Default

Quote:
Originally Posted by dafoot View Post
I have 355s. My answer is....not sure. I pull a 5 to 6 thousand pound boat. Seams to pull ok. What I don't like is the tourqe converter going out of lock up on certain hills. (in 4th gear). I came from the Tundra with 410s. That truck never left lock up in 4th gear. Of course the rpms were higher in the Tundra. If I new the Ram would stay in lock up..I would go with the lower gears.
I'm not surprised to hear this with that kind of load on the back, especially when you consider the 545RFE is a double overdrive transmission.
Reply With Quote
  #7  
Old 06-17-2010, 12:14 AM
Yotaman96 Yotaman96 is offline
Dodge Ram Forum Junior Member
 
Join Date: Dec 2009
Location: Portland, TN
Age: 34
Posts: 30
Gender: Male
Vehicle: 2010 Dodge Ram
Trim Level: Sport
Color: White
Engine: 2009-2010 345ci (5.7L) Hemi V8 390hp 407lb/ft
Rep Power: 0
Rep:10
Yotaman96 is on a distinguished road
Default

I don't like my 3.55s at all. The truck constantly downshifts even on the slightest hills. It struggles towing things that my Titan never had an issue pulling. I have a friend that has the 3.92s and he always gets better mpg than me. Definately go for the 3.92s.
__________________
2010 Ram 1500 Crew Cab 4x4 Sport
Reply With Quote
  #8  
Old 06-17-2010, 12:34 AM
brad12kx's Avatar
brad12kx brad12kx is offline
Just some guy in Canada


 
Join Date: Apr 2010
Location: Brandon, MB
Posts: 22,792
Gender: Male
Vehicle: 2010 Ram 1500 QC
Trim Level: Sport
Color: Black
Engine: 2009-20?? 345ci (5.7L) Hemi V8 390hp 407lb/ft
Rep Power: 21
Rep:2581
brad12kx has a reputation beyond reputebrad12kx has a reputation beyond reputebrad12kx has a reputation beyond reputebrad12kx has a reputation beyond reputebrad12kx has a reputation beyond reputebrad12kx has a reputation beyond reputebrad12kx has a reputation beyond reputebrad12kx has a reputation beyond reputebrad12kx has a reputation beyond reputebrad12kx has a reputation beyond reputebrad12kx has a reputation beyond repute
Default

3.92's all the way! Even if you don't plan to pull a trailer.
Locally, I have been able to run caparison tests between a few 09/10 Rams. 3 have 3.92's, 5 have 3.55's 2 have 3.21's. The ones with 3.92's consistently get the best gas mileage both city and highway. The 3.55's ad 3.21's are about the same. The 3.21's are IMO a complete waste of time, especially if you pull a trailer. The 3.55's are fine, but don't seem get the mileage of the 3.92's.
These are absolutely NOT the results I expected.
Most recent trip - 515kms (~320miles) - 4 2010 Ram 1500's with 5.7 All QC but 3.21 - It's a RC LB.....
About 400kms - highway, remainder - urban
Highway cruising speed - 110kmh (~70mph)
Wind - 5-10 mph, crosswind Temp - 21degC (~70degF)
1 - 3.92 - 23 mpg (mine)
2 - 3.55 - 21.5 mpg
3 - 3.55 - 21 mpg
4 - 3.21 - 21 mpg
AND - I was the only one of the bunch that 'Hot Rodded' a bit during the trip. (1 Ford, 2 Chev......toast!)
__________________
brad

Interested in one of my mods?
If it's underlined, it's a link to that mods thread.

2010 Ram 1500 Hemi Sport, 3.92, Leather, NAV, Alpine, Sunroof, Trailer tow, Brake Contoller, Rear Cam
Mods - 3M clear protect, Decals removed, Electric Tailgate Lock, Tow Hooks, Skid Plates, Bed Rug, Pace Edwards Bedlocker Electric Tonneau, Timbren Rear SES, Tinted Tail Lights, Debadged, Grill Blacked Out, Shorty Antenna, Black Chromed Emblems, Lightly tinted front windows, DS Predator, Cabin Air Filter, K&N Drop In, Mufflex (Magnaflo) DOD24M, Sonnax line pressure booster, Volant CAI
Reply With Quote
  #9  
Old 06-17-2010, 12:55 AM
Ruffian11's Avatar
Ruffian11 Ruffian11 is offline
Dodge Ram Forum Senior Member!
 
Join Date: Jan 2010
Location: Vancouver, BC
Age: 22
Posts: 1,358
Gender: Male
Vehicle: 2005 Dodge Ram 1500
Trim Level: SLT
Color: Black
Engine: 2003-2008 345ci (5.7L) Hemi V8 345hp 375lb/ft
Rep Power: 5
Rep:140
Ruffian11 will become famous soon enoughRuffian11 will become famous soon enough
Default

I would go for the 3.92!! i have heard many complain the if you tow with the 3.55 you will really notice it on an type of incline!!! Plus when it comes down to the mileage i don't think your going to notice enough compared to the towing....plus your driving a truck, 1 mpg better really won't be that much better, its still gonna take fuel!
__________________
2005 SLT 1500 5.7L Hemi
5" Rough Country Lift, Procomp 8101 20x9 Rims, K&N CAI,Flowmaster Exhaust Cat-Back Dual Exit, 325/60/20 BFG KM2, Tonneau Cover, Bedlined, Grill Hella 500's!
Alpine CDA-9887 Headunit, Twister 300 Amp, Dual 10" MTX Thunders, Thunder Form Box
Reply With Quote
  #10  
Old 06-17-2010, 07:50 AM
dafoot dafoot is offline
Dodge Ram Forum Senior Member!
 
Join Date: May 2010
Location: Bismarck, ND
Age: 52
Posts: 227
Gender: Male
Vehicle: 2011 Dodge Ram, 1500, Hemi
Trim Level: Laramie
Color: White
Rep Power: 0
Rep:16
dafoot is on a distinguished road
Default

Quote:
Originally Posted by Remerson228 View Post
I'm not surprised to hear this with that kind of load on the back, especially when you consider the 545RFE is a double overdrive transmission.
Are you saying 4th and 5th are overdrive gears?
__________________
DAFOOT
Reply With Quote
Reply

Bookmarks

Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


Advertisement






All times are GMT -4. The time now is 06:42 PM.


= Copyright RamForumZ.com a Gigathreads.com Network Site =Ad Management by RedTyger
Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
vB.Sponsors


=Gigathreads Network=
CLUBS MOPAR NATION DSM GPMM MAMM JAM
DIESEL Diesel Forum      
CHEVY Chevy Camaro Forum Chevy Volt Forum    
CHRYSLER Chrysler 300C Forum      
DODGE Dodge Avenger Forum Dodge Caliber Forum Dodge Challenger Forum Dodge Charger Forum
  Dodge Circuit Forum Dodge Hornet Forum Dodge Magnum Forum Dodge Nitro Forum
  Dodge Ram Forum Dodge Dakota Forum Dodge Durango Forum Dodge Dart Forum
FORD Ford Raptor Forum Ford F150 Forum Ford F100 Forum  
JEEP Jeep Forum      
PONTIAC Pontiac G8 Forum      
SRT SRT Viper Forum SRT Cuda Forum