Go Back   Ford Truck Enthusiasts Forums > Older, Classic & Antique Trucks > 1967 - 1972 F-100 & Larger F-Series Trucks
Sign in using an external account
Register Forgot Password?


1967 - 1972 F-100 & Larger F-Series Trucks Discuss the Bumpsides Ford Truck

Welcome to Ford-Trucks Forums!
Welcome to Ford-Trucks.com.

You are currently viewing our forums as a guest, which gives you limited access to view most discussions and access our other features. By joining our community you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is fast, simple and absolutely free so please, join the Ford-Trucks Forums community today!





 
Reply
 
 
 
 
LinkBack Thread Tools Search this Thread
  #1  
Old 12-11-2004, 09:42 PM
Fordfreak1978 Fordfreak1978 is offline
Junior User
 
Join Date: Sep 2004
Posts: 71
Fordfreak1978 is starting off with a positive reputation.
Exclamation gas mileage w/ 390

what kind of mileage do you guys get highway and city?
Reply With Quote
  #2  
Old 12-11-2004, 09:52 PM
390428cjt 390428cjt is offline
Senior User
 
Join Date: Jan 2004
Location: G.R. MICH. 49505
Posts: 325
390428cjt is starting off with a positive reputation.
390 gas mileage

I get 11.7 mpg city or highway 72 f-250 390/396 500t@ 3500rpm, 370 hp@3800rpm c-6 modified dana60 4.10 limited slip truck weights @ 5960 with my fat butt and two bags of fuel 8k on rebuild at this time. Tim.
__________________
390428cjt
Reply With Quote
  #3  
Old 12-12-2004, 09:29 AM
dbossman dbossman is offline
Senior User
 
Join Date: Aug 2003
Posts: 241
dbossman is starting off with a positive reputation.
Do tell...

390428cjt, how have you built the 390? 500tq and 11+ mpg sounds pretty nice.

dbossman
Reply With Quote
  #4  
Old 12-13-2004, 07:41 AM
jowilker's Avatar
jowilker jowilker is offline
Post Fiend
 
Join Date: Jun 1999
Location: Creedmoor, North Carolina
Posts: 22,794
jowilker is a splendid one to beholdjowilker is a splendid one to beholdjowilker is a splendid one to beholdjowilker is a splendid one to beholdjowilker is a splendid one to beholdjowilker is a splendid one to behold
https://www.facebook.com/?ref=tn_tnmn jowilker
11.7 mpg with 4.10 rears is even more impressive.

John
__________________
In the cool still quiet hours of night, you can hear chevies rusting away.
Reply With Quote
  #5  
Old 12-13-2004, 10:57 AM
fellro86's Avatar
fellro86 fellro86 is offline
Iowa Benevolent Dictator
 
Join Date: Feb 2004
Location: Marengo, Iowa
Posts: 11,603
fellro86 has much to be proud offellro86 has much to be proud offellro86 has much to be proud offellro86 has much to be proud offellro86 has much to be proud offellro86 has much to be proud offellro86 has much to be proud offellro86 has much to be proud offellro86 has much to be proud of
I always got around 8 with my 390 4bbl, C-6, 4.10 4x4 in my 75 250...
__________________
the workhorse:86 F250 4x4 6.9 Diesel 4-spd, 4.10 axles
the other workhorse 92 F350 2wd crew cab,3.55 rear axle, 92 6bt Cummins, NV4500
the project: 78 F150 4x4 shortbed 351 auto
Iowa Chapter leader, ASE certified parts specialist
Come on down and join us in the Iowa chapter, or your own local chapter!! Thanks, Roger

Last edited by fellro86; 12-13-2004 at 11:19 AM.
Reply With Quote
  #6  
Old 12-13-2004, 11:16 AM
gtex's Avatar
gtex gtex is offline
Post Fiend
 
Join Date: Apr 2001
Location: Texas
Posts: 5,859
gtex is gaining momentum as a positive member of FTE.
Quote:
Originally Posted by 390428cjt
I get 11.7 mpg city or highway 72 f-250 390/396 500t@ 3500rpm, 370 hp@3800rpm c-6 modified dana60 4.10 limited slip truck weights @ 5960 with my fat butt and two bags of fuel 8k on rebuild at this time. Tim.

Where did you get your HP and weight figures? That seems heavy, unless you have a 4x4 or dually?

My 69 f250 2wd weighs between 4500-5000 depending on gas tanks and what junk I'm hauling.

My stroked 428, made 360 HP at the rear wheels. Through a C6 and Dana 60 with 4.10s.

I don't get anywhere near 11mpg. I have not really measured it, but I suspect I'm closer to 7mpg.
__________________
Gtex
RIP 68 F100
Sold- 67/69 Hybrid F250 CS 446 CI FE C6
2001 F150 5.4l 7700 4x4
Reply With Quote
  #7  
Old 12-13-2004, 01:09 PM
rebocardo rebocardo is offline
Post Fiend
 
Join Date: Jun 2002
Location: Atlanta GA
Posts: 13,873
rebocardo has much to be proud ofrebocardo has much to be proud ofrebocardo has much to be proud ofrebocardo has much to be proud ofrebocardo has much to be proud ofrebocardo has much to be proud ofrebocardo has much to be proud ofrebocardo has much to be proud ofrebocardo has much to be proud of
Last time I checked I got 8 mpg city and highway. I hardly do any highway driving and when I do it is with 1500-2000 pounds of wood so I can not really measure the highway driving accurately. Having the front axle locked in does make about a 2 mpg difference empty.

1971 (with a 1965 390) F-100 4x4 np435. I added about 600 pounds of steel to my truck in the way of bumpers, flat bed, and reinforced the rear frame every 18 inches. I imagine the truck is way over 4000 pounds.
Reply With Quote
  #8  
Old 12-14-2004, 01:46 AM
390428cjt 390428cjt is offline
Senior User
 
Join Date: Jan 2004
Location: G.R. MICH. 49505
Posts: 325
390428cjt is starting off with a positive reputation.
390 mileage

gtex Did i forget to mention that it has a commerical cap for all my tools as Im a remolder/carpenter which add about 1k to truck weight plus a 3/8 plate steel custom bumper on the back/with reese hitch built in and its welded to the frame ( i would feel sorry for the person that would hit that) The power ratings were done on the engine dyno after three pulls and added 10% after breakin time which is where i have the estimate ##,s with the 4.10's Im about done @100mph 4900rpm the dyno # are correct and was built by a man who races in the nationals fords of course he's been racing and buliding fe's for 38 yrs was recommended by george guessford , hes building a 428 that he claimes will put out 500hp natural I'll have it by spring and i belive him after all expercing is beliving and the mialage is if i keep it around 3000 rpm or less 55 to 60 mph plus i run a demon 625 with the purple secondary spring it keeps the back barrels closed until i put my foot into it, so im using only 2bbls just cruising before i switch the spring i was getting 8mpg. That the facts and im sticking to it.
__________________
390428cjt
Reply With Quote
  #9  
Old 12-14-2004, 01:50 AM
390428cjt 390428cjt is offline
Senior User
 
Join Date: Jan 2004
Location: G.R. MICH. 49505
Posts: 325
390428cjt is starting off with a positive reputation.
The details on build will take some time I have to gather all the paper work and specs and condense it as its alot of typing will post soon on it.
__________________
390428cjt
Reply With Quote
  #10  
Old 12-14-2004, 02:28 AM
"Beemer Nut" "Beemer Nut" is offline
Post Fiend
 
Join Date: Dec 2003
Location: "Islander"
Posts: 6,658
"Beemer Nut" has a good reputation on FTE."Beemer Nut" has a good reputation on FTE."Beemer Nut" has a good reputation on FTE.
great mileage numbers

390428, thanks for the offer on your build specs as i'm also interested. Carl
.....o&o>.....
__________________
.....=o&o>.....
Reply With Quote
  #11  
Old 12-14-2004, 05:39 PM
cleanLX cleanLX is offline
Elder User
 
Join Date: Mar 2003
Location: Phoenix Az, by way of Fre
Posts: 538
cleanLX is starting off with a positive reputation.
yep that sounds great.
I'm getting 9mpg, driving like grandpa, 10k on the rebuilt 390, 3k on the rebuilt tranny.
Mine is nothing special, desktop dyno puts it at 270hp and 390tq and mines never been loaded down.
Guy that built mine sair it should knock down 14-15mpg... schessh... I wish... that'd be 50% better!
__________________
Mike H.
1969 F250
1992 5.0 lx coupe.
Reply With Quote
  #12  
Old 12-15-2004, 06:52 PM
bertha66's Avatar
bertha66 bertha66 is offline
Post Fiend
 
Join Date: Oct 2004
Location: Central Oregon
Posts: 7,238
bertha66 is a splendid one to beholdbertha66 is a splendid one to beholdbertha66 is a splendid one to beholdbertha66 is a splendid one to beholdbertha66 is a splendid one to beholdbertha66 is a splendid one to beholdbertha66 is a splendid one to behold
I have a 68 F-350 with 360 and it gets 7-9 mpg, I also have a 66 F-100 4x4 that has a 67 Fairlane GT 390 Hi-Pro with a Elderbrock 4v and headers with duel pipes, all the rest of the running gear is stock for the 66, 4 speed and in/out tranfercase. This truck gets 11-12 mpg in town, I live in a very small town, and 15+ on the open road. I have had this truck sence 1979 and was put togather this way in 1980.
Reply With Quote
  #13  
Old 12-15-2004, 07:53 PM
390428cjt 390428cjt is offline
Senior User
 
Join Date: Jan 2004
Location: G.R. MICH. 49505
Posts: 325
390428cjt is starting off with a positive reputation.
no two motors or trucks are the same

in theroy the 390 should pull 10-15 mpg but road cond't weather, specific setups, weight, drivers, tires,carbs setups etc yield various mpg numbers if i put my foot into it opening the back venturies I'll yield around 7mpg.Driving at 60 mph @3000rpm I'll get over 11mpg but also its winter time here so there warmup time involved here and that cuts into my mileage as you may know the fe's are cold blooded until fully warmed up.
__________________
390428cjt
Reply With Quote
  #14  
Old 12-16-2004, 07:05 AM
jowilker's Avatar
jowilker jowilker is offline
Post Fiend
 
Join Date: Jun 1999
Location: Creedmoor, North Carolina
Posts: 22,794
jowilker is a splendid one to beholdjowilker is a splendid one to beholdjowilker is a splendid one to beholdjowilker is a splendid one to beholdjowilker is a splendid one to beholdjowilker is a splendid one to behold
https://www.facebook.com/?ref=tn_tnmn jowilker
60 with 3000 rpms is tooo high for good mpg, I think mine is turning about 2150 at 60.

To keep these big guys sipping gas, ya gotta keep the rpms down, and not run big ol cfm carbs that tend to waste it. IMHO

John
__________________
In the cool still quiet hours of night, you can hear chevies rusting away.
Reply With Quote
  #15  
Old 12-16-2004, 08:55 AM
jor jor is offline
Elder User
 
Join Date: Jan 2002
Location: Tucson
Posts: 987
jor is starting off with a positive reputation.
My stock 352 in a stock F-100 gets 11.6 mpg in the city. One time a couple of years ago I got almost 15 on the highway (still a little flushed from that experience).
jor
Reply With Quote
Old 12-16-2004, 08:55 AM
 
 
 
Reply

Similar Threads
Thread Thread Starter Forum Replies Last Post
Mileage improvements. bainbob 1999 - 2003 7.3L Power Stroke Diesel 17 12-31-2002 08:07 PM
V10 Mileage Jetfixr Excursion - King of SUVs 3 11-11-2002 11:30 PM
Gas Mileage eakanator 1987 - 1996 F150 & Larger F-Series Trucks 2 07-09-2002 02:07 PM
Fuel Mileage for a PSD NoMo Super Duty & Heavy Duty 7 04-28-2002 01:22 AM
gas mileage lanero Small Block V8 (221, 260, 289, 5.0/302, 5.8/351W) 7 02-02-2001 04:35 AM


Go Back   Ford Truck Enthusiasts Forums > Older, Classic & Antique Trucks > 1967 - 1972 F-100 & Larger F-Series Trucks

Tags
1967, 390, engine, ford, gas, mileage

Thread Tools Search this Thread
Search this Thread:

Advanced Search

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 On
Trackbacks are On
Pingbacks are On
Refbacks are On

Forum Jump



All times are GMT -5. The time now is 05:23 AM.


Powered by vBulletin® Version 3.8.7 AC1
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Advertising - Terms of Use - Privacy Statement - Jobs
This forum is owned and operated by Internet Brands, Inc., a Delaware corporation. It is not authorized or endorsed by the Ford Motor Company and is not affiliated with the Ford Motor Company or its related companies in any way. FordŽ is a registered trademark of the Ford Motor Company.

vbulletin Admin Backup