Reply
 
Thread Tools Display Modes
Old 10-28-2013, 11:22 AM   #11
Denver, CO
 
garbonz's Avatar
 
Join Date: Jan 2013
Location: Denver, CO
Posts: 1,905
Slow down to 60. Thats the only way to appreciably increase MPG, regardless of what else you do.
__________________

__________________
2007 Chevy 2500HD Classic LBZ Duramax/Allison (Stock)
2005 Bigfoot 1500C8.2 AWESOME
garbonz is offline   Reply With Quote
Old 10-28-2013, 11:38 AM   #12
Senior Member
 
wilem's Avatar
 
Join Date: Aug 2013
Posts: 127
i concur with most all of what has already been said. but if you are having a lot of down shifting and the engine is lugging you could possibly see an increase. not much but it sure would reduce transmission heat and friction withing the torque converter (some refer to this friction as fluid shearing). the gear stated is not enough IMHO i would say you need a 3:73 or 4:10 especially if you have 2 OD ranges. it will however decrease you non towing mileage without a doubt. But i would be more concerned with transmission life than fuel mileage either way. I have installed dozens of gears and out side of towing you will not likely ever get better mileage with a higher ratio. YMMV

NOTE: you should see the things that happen when the fluid temp of a transmission goes over 200 deg/ valves stick, fluid temp runs away, fluid is vented at an alarming rate, sometimes onto the catalytic converter and then you have tons o smoke and maybe even a fire.
__________________

__________________
William
Master ASE
Private pilot SEL
A&P
jack of all trades master of one...LOL
http://imageshack.us/a/img32/3111/ypy.JPG
wilem is offline   Reply With Quote
Old 10-28-2013, 11:42 AM   #13
Senior Member
 
wilem's Avatar
 
Join Date: Aug 2013
Posts: 127
Quote:
Originally Posted by garbonz View Post
Slow down to 60. Thats the only way to appreciably increase MPG, regardless of what else you do.
this is the best way to increase mileage,

Air pressure increases exponentially with velocity so its painfully obvious that the faster you go the more it costs. I would install a roof wind deflector if they weren't so permanent... that would help a lot.
__________________
William
Master ASE
Private pilot SEL
A&P
jack of all trades master of one...LOL
http://imageshack.us/a/img32/3111/ypy.JPG
wilem is offline   Reply With Quote
Old 10-28-2013, 11:43 AM   #14
Junior Member
 
Join Date: Oct 2013
Posts: 10
http://www.ringpinion.com/calculators/Calc_RPM.aspx

This might help.
__________________
rccktmn2 is offline   Reply With Quote
Old 10-28-2013, 05:22 PM   #15
Moderators' Assistant
 
bikendan's Avatar
 
Join Date: Jan 2007
Location: Camano Island, Washington
Posts: 13,306
as others have said, slowing down to 60mph would give you better gas mileage than any of the things you're thinking of doing.
and expecting a cap to improve gas mileage, has been proven many times NOT to work, just like leaving the tailgate down.
__________________
Dan-Retired Firefighter/EMT
Shawn-Musician/Entrepreneur/Wine Expert
and Zoe the Wonder Dog(R.I.P.)
2016 PrimeTime TracerAIR 255, pushing a 2014 Ford F150 4x4 3.5 Ecoboost w/Max Tow Package
Equalizer WDH and Prodigy BC
bikendan is offline   Reply With Quote
Old 10-28-2013, 08:11 PM   #16
Junior Member
 
Join Date: Oct 2013
Location: Oklahoma City
Posts: 16
great advice everyone. so maybe I'll go for the 3.92 ratio as that is as low as I can go. There is only like $10.00 difference in price between the 3.55 and the 3.92.
__________________
kwbybee is offline   Reply With Quote
Old 10-28-2013, 08:43 PM   #17
Senior Member
 
Join Date: May 2013
Location: St. Charles, MO
Posts: 192
Do you have it in tow/haul mode? I have essentially the same mix and do not find much gear changing.
A long time ago I had a GMC 454 1 ton with a slide in, a cattle rack or most often just an empty bed. Mostly I found the mileage was limited (or maximized) by the flow through a 3/8" fuel line. Generally 8 mpg uphill with the slide-in camper and sailboat or 8 mpg downhill with an empty bed and the tailgate down.
__________________
Timtation is online now   Reply With Quote
Old 10-29-2013, 12:21 PM   #18
Senior Member
 
Join Date: Jun 2013
Posts: 357
i have a 2013 Ram 1500 5.7 with the 3.92. the most i get with the ac on towing around Texas is 10mpg TT is right at 4k loaded for the weekend. and i tow at 65 on the freeway. You almost get run over in the 75mph area's
__________________
2013 Ram 1500 (5.7)
2014 Rockwood Mini Lite 2104s
http://i307.photobucket.com/albums/n...ps412bc14c.jpg
Prothos is offline   Reply With Quote
Old 10-30-2013, 11:24 PM   #19
Junior Member
 
Join Date: Oct 2013
Location: Oklahoma City
Posts: 16
Hey Prothos, what is your fuel mileage when not towing?
__________________
kwbybee is offline   Reply With Quote
Old 10-31-2013, 09:36 AM   #20
Senior Member
 
Join Date: Nov 2012
Location: Winnipeg
Posts: 732
Quote:
Originally Posted by garbonz View Post
Slow down to 60. Thats the only way to appreciably increase MPG, regardless of what else you do.
I run at 55 mph, and get even better mileage! I know that probably ticks some people off, but that's what 4 lanes are for. On 2 lanes when traffic builds up behind me I pull over and let the traffic pass! Last summer on our way to Branson and back I was getting 14 + mpg with the wind in my back. 10 to 12 with no wind conditions. Safe travels all!
__________________

__________________
Of all the things I've lost in my life the thing I miss the most is my mind!
prairiecamper is offline   Reply With Quote
Reply

Thread Tools
Display Modes

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
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



» Virginia Campgrounds

Reviews provided by




ForestRiverForums.com is not in any way associated with Forest River, Inc. or its associated RV manufacturing divisions.


Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -5. The time now is 06:09 PM.