Go Back   Ford Truck Enthusiasts Forums > Newer Light Duty Trucks > 2004 - 2008 F150
Sign in using an external account
Register Forgot Password?


2004 - 2008 F150 2004, 2005, 2006, 2007 and 2008 Ford F150's with 5.4 V8, 4.6 V8 or 4.2 V6 engine
SPONSORED BY:
Click HereAdvertisement

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 04-21-2008, 10:52 PM
DanielB DanielB is offline
Freshman User
 
Join Date: Apr 2008
Posts: 29
DanielB is starting off with a positive reputation.
Thinking of buying a newer truck 5.4 or 4.6 that is the question

I'm in the market for a truck. I should never have sold my 01 F150. I'm looking at getting a 04-07 SuperCrew 4x4 but I'm stuck on which engine to get.

My old truck had the 4.6 that got the job done for the most part. I have driven several 5.4 trucks one to drag a CJ-7 on a trailer from Lubbock to OKC.

My true question. Does the 5.4 get that much worse gas mileage than the 4.6 or is the difference negligible?

Thanks in advance
Reply With Quote
  #2  
Old 04-21-2008, 11:31 PM
XolieX's Avatar
XolieX XolieX is offline
Elder User
 
Join Date: Jan 2005
Posts: 504
XolieX is starting off with a positive reputation.
most people on this site said on other thread say that the 4.2, 4.6 and 5.4 get nearly the same fuel economy. and that its not worth having the smaller motor if possible to avoid it.

however, on the sticker, the 4.6 gets 1mpg more on highway ONLY!
__________________
Reply With Quote
  #3  
Old 04-22-2008, 07:37 AM
gpeade's Avatar
gpeade gpeade is offline
Elder User
 
Join Date: Aug 2004
Location: P.G. VA
Posts: 534
gpeade is starting off with a positive reputation.
Oh no you didn't ask the mileage question
Hope you are wearing hip boots cause it's liable to get deep around here

For what its worth my 5.4 gets 12 and change. It got 13 and change without any mods. I have bought smaller engines before with the hopes of better mileage. I always ended up wishing I had the HP because the mileage wasn't enought to offset the power difference.
__________________
04 F-150 XLT SCREW 4X4, K&N AIR INTAKE , 1 1/2 LEVELING KIT, 285/70R17 TOYO OPEN COUNTRY AT's
Reply With Quote
  #4  
Old 04-22-2008, 07:48 AM
DanielB DanielB is offline
Freshman User
 
Join Date: Apr 2008
Posts: 29
DanielB is starting off with a positive reputation.
I figured I should have searched before I opened this box, but hey its open. I'll go dig the chest waders out just in case.

The only late model 4x4 I have driven with a trailer had the 4.6 under the hood. I drove it for roughly 30 miles on the interestate at around 70 mph. It was all I could do to keep it at a constant speed. This was an empty 10' trailer with a flip down loading ramp that acted like a parachute.
Reply With Quote
  #5  
Old 04-22-2008, 09:19 AM
osbornk osbornk is offline
Postmaster
 
Join Date: Nov 2004
Location: Marion, VA
Posts: 2,511
osbornk is gaining momentum as a positive member of FTE.osbornk is gaining momentum as a positive member of FTE.
They all get about the same mileage. I have 2 cousins that have 4.6 engines and my 5.4 gets better mileage than either of them (part is driving habits). YOu also get a larger rear end and with the older ones, you get a heavier transmission (I think the new ones all have the heavier transmission). There is a large difference in perofrmance.
__________________
2004 XLT Regular Cab, Short Bed, 4X4 with 5.4 and 3.73.
Reply With Quote
  #6  
Old 04-22-2008, 09:26 AM
builtfordtough13's Avatar
builtfordtough13 builtfordtough13 is offline
Posting Guru
 
Join Date: Jun 2007
Location: Washington
Posts: 1,215
builtfordtough13 is gaining momentum as a positive member of FTE.
We have an 04 Expedition with a 5.4, and my aunt has an 03 Expedition with the 4.6, we get about 1 more mpg on the highway then her, better towing cabability, and better towing mileage. So 5.4 all the way.
__________________
Jake
DD:1994 F-150 4x4 Supercab, 351, E4OD,187k Rough Country Leveling Kit and 9000 Series Shocks
Project:1978 F-150 Reg. Cab 4x2 302 c4 Edelbrock Carb, Cam and Intake, TCI Shift Kit, 3.70 Gears

Reply With Quote
  #7  
Old 04-22-2008, 09:28 AM
builtfordtough13's Avatar
builtfordtough13 builtfordtough13 is offline
Posting Guru
 
Join Date: Jun 2007
Location: Washington
Posts: 1,215
builtfordtough13 is gaining momentum as a positive member of FTE.
We have an 04 Expedition with a 5.4, and my aunt has an 03 Expedition with the 4.6 and we get better mileage then her on the highway, tow better and get better mileage doing it. As the saying goes, no replacment for displacment.
__________________
Jake
DD:1994 F-150 4x4 Supercab, 351, E4OD,187k Rough Country Leveling Kit and 9000 Series Shocks
Project:1978 F-150 Reg. Cab 4x2 302 c4 Edelbrock Carb, Cam and Intake, TCI Shift Kit, 3.70 Gears

Reply With Quote
  #8  
Old 04-22-2008, 06:24 PM
Tylus's Avatar
Tylus Tylus is offline
MMNC (SS)
 
Join Date: Mar 2004
Location: Pearl Harbor
Posts: 10,532
Tylus has a superb reputationTylus has a superb reputationTylus has a superb reputationTylus has a superb reputationTylus has a superb reputationTylus has a superb reputationTylus has a superb reputationTylus has a superb reputationTylus has a superb reputationTylus has a superb reputationTylus has a superb reputation
5.4 = more HP, more TQ, bigger Transmission, bigger rear axle (9.75 vs 8.8)

I've said it before, the 4.6 is a Weak, Underpowered Pig. it belongs in cars and SUV's. sorry it it offends you 4.6 guys

besides the obvious power difference, the 5.4 can get similar MPG if you drive it reasonably. I've been able to get 20+ mpg on the highway. also, as someone mentioned (OP?), the 4.6 struggles to maintain speeds on slight inclines and especially when towing. I can set mine to 75 mph and unless it's a steep grade like Snoqualmie Pass or some of Idaho, it stays in Overdrive
__________________
2002 Excursion XLT w/ V-10 <---Build thread
2015 Chevrolet Tahoe - I've owned 4 brand new Fords since 2006. Notice that I bought a Chevy this time. That should tell you something
Reply With Quote
  #9  
Old 04-22-2008, 06:29 PM
SUPERDUTY_untouchabl's Avatar
SUPERDUTY_untouchabl SUPERDUTY_untouchabl is offline
Posting Guru
 
Join Date: Nov 2006
Posts: 1,442
SUPERDUTY_untouchabl is gaining momentum as a positive member of FTE.
I have a 4.6 and I have no complaints about it. I dont think the 4.6's have the spark plug trouble but I'm not sure I havent changed plugs yet. As far as gas mileage go I only get 16.5. The best its ever seen was 18 all highway. As far as power goes, its no tire roaster but it can get the job done. If you were to ask me, I wouldnt hesitate a bit to buy another 4.6.
__________________
-Josh
04 F150 4.6l Gryphon Powered 2wd reg cab XL 3:55 LS SISO Flowmaster S40 NCD Customs 2.5" Leveling Kit Burner High Power Fog Lights 285/70/17 BFG A/T KO's
Reply With Quote
  #10  
Old 04-22-2008, 06:33 PM
SUPERDUTY_untouchabl's Avatar
SUPERDUTY_untouchabl SUPERDUTY_untouchabl is offline
Posting Guru
 
Join Date: Nov 2006
Posts: 1,442
SUPERDUTY_untouchabl is gaining momentum as a positive member of FTE.
Quote:
Originally Posted by tylus View Post
5.4 = more HP, more TQ, bigger Transmission, bigger rear axle (9.75 vs 8.8)

I've said it before, the 4.6 is a Weak, Underpowered Pig. it belongs in cars and SUV's. sorry it it offends you 4.6 guys

besides the obvious power difference, the 5.4 can get similar MPG if you drive it reasonably. I've been able to get 20+ mpg on the highway. also, as someone mentioned (OP?), the 4.6 struggles to maintain speeds on slight inclines and especially when towing. I can set mine to 75 mph and unless it's a steep grade like Snoqualmie Pass or some of Idaho, it stays in Overdrive
Hater.....

Lol, you are mostly right though. The 4.6 will downshift but its a shorter stroke motor that likes to rev. I never thought of it being a slow underpowered pig. But everyone has there opinions. I think its more the overly obeise truck. Crap for all we know it could be a screamin demon in a lighter truck.
__________________
-Josh
04 F150 4.6l Gryphon Powered 2wd reg cab XL 3:55 LS SISO Flowmaster S40 NCD Customs 2.5" Leveling Kit Burner High Power Fog Lights 285/70/17 BFG A/T KO's
Reply With Quote
  #11  
Old 04-22-2008, 06:45 PM
Tylus's Avatar
Tylus Tylus is offline
MMNC (SS)
 
Join Date: Mar 2004
Location: Pearl Harbor
Posts: 10,532
Tylus has a superb reputationTylus has a superb reputationTylus has a superb reputationTylus has a superb reputationTylus has a superb reputationTylus has a superb reputationTylus has a superb reputationTylus has a superb reputationTylus has a superb reputationTylus has a superb reputationTylus has a superb reputation
Quote:
Originally Posted by SUPERDUTY_untouchabl View Post
Hater.....

I think its more the overly obeise truck. Crap for all we know it could be a screamin demon in a lighter truck.
I agree 100%. 10 years ago, the 4.6 in the 1988-1996 Body styles would have been amazing. the F-150 of today on average weighs 1500 lbs more than earlier F-150s.

I really got nothing personal against the 4.6, but it just doesn't make sense to get when a better engine exists
__________________
2002 Excursion XLT w/ V-10 <---Build thread
2015 Chevrolet Tahoe - I've owned 4 brand new Fords since 2006. Notice that I bought a Chevy this time. That should tell you something
Reply With Quote
  #12  
Old 04-22-2008, 06:59 PM
bridge's Avatar
bridge bridge is offline
Postmaster
 
Join Date: May 2006
Location: League City, TX
Posts: 2,537
bridge has a great reputation on FTE.bridge has a great reputation on FTE.bridge has a great reputation on FTE.bridge has a great reputation on FTE.
Daniel, read up on the spark plug issues in the 5.4's. That might tip you in the direction of the 4.6. Mileage between the two is negligible so unless you need the extra towing capability the smaller engine might be more up your alley. If I were faced with your decision and know what I know about the plugs in the 5.4 I would probably go 4.6, because the plug problem scares the crap outta me!

Best of luck...
__________________
Current Stable
2014 F-250 King Ranch Crew Cab 6.7L Diesel FX4 (Fifth Wheel Keystone Cougar 327RES)
2013 Expedition King Ranch

Put Out to Pasture
2011 F-250 King Ranch Crew Cab 6.7L Diesel FX4; 2006 F-150 Lariat SuperCrew 5.4L 3V 4x4; 2006 EB Expedition 5.4L 3V; 2002 Mustang Convertible GT 4.6L; 2001 Eddie Bauer Expedition 5.4L
Reply With Quote
  #13  
Old 04-22-2008, 07:25 PM
mbogosia's Avatar
mbogosia mbogosia is offline
Elder User
 
Join Date: Feb 2007
Posts: 546
mbogosia needs to improve their reputation.
Get the 5,4 V8. If you don't you will regret it. Plus with all the gas issues right now you should be able to get a heck of a deal on any truck.
Reply With Quote
  #14  
Old 04-22-2008, 07:44 PM
DanielB DanielB is offline
Freshman User
 
Join Date: Apr 2008
Posts: 29
DanielB is starting off with a positive reputation.
I always seem to be in the market for what other people are looking to get rid of. Right now I have at least a half dozen trucks to choose from that fit my price range, options and have the 5.4

After some quick reading on the spark plug issue it appears Ford has a design flaw or screwup in materials. I'm not too worried about the repair if it is needed. I have some very good connections with one of the local Ford dealerships.

I'm leaning more towards the 5.4 every minute. Its just something about more power that I can't get over.
Reply With Quote
  #15  
Old 04-22-2008, 11:06 PM
BLK94F150 BLK94F150 is offline
Postmaster
 
Join Date: Sep 2002
Location: None of your business
Posts: 3,077
BLK94F150 has a great reputation on FTE.BLK94F150 has a great reputation on FTE.BLK94F150 has a great reputation on FTE.BLK94F150 has a great reputation on FTE.
There is not question- 5.4 definitely. I've seen 20MPG out of my 2000 on the highway.

Try to get the 3.73 gears as well.

Mike
__________________
Confusing people's opinions with facts here since 09-30-2002
Reply With Quote
Old 04-22-2008, 11:06 PM
 
 
 
Reply

Go Back   Ford Truck Enthusiasts Forums > Newer Light Duty Trucks > 2004 - 2008 F150

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 09:12 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