5.4 performance - reputation as gutless? - Ford Truck Enthusiasts Forums



5.4 performance - reputation as gutless?

Reply
 
 
 
Thread Tools Search this Thread
  #1  
Old 11-04-2010, 01:34 AM
AK 440 AK 440 is offline
Freshman User
Thread Starter
 
Join Date: Aug 2010
Location: Alaska
Posts: 49
AK 440 is starting off with a positive reputation.
5.4 performance - reputation as gutless?

I've got a 5.4 in my '06 F250 and bought my "new to me" truck specifically for this engine equipped with a 6 spd manual transmission. I previously owned a 1/2 ton Chevy ext cab with a 5.3 and an automatic. The 5.3 is listed with lower HP and torque numbers than the 5.4 but it felt a lot more responsive on the highway. My 5.4 is feels like it has quite a bit more power down low, but also feels like it goes flat at highway speeds. I don't have any problems making passes on the highway, but the engine just doesn't feel very impressive compared to the 5.3.

Could this be a case of auto versus manual trans? I know my 5.3 felt weak on the bottom end when towing my big enclosed trailer so I'm thinking my old Chevy was a lot more of a commuter/highway truck than a work truck. In any case, the contractors I work with all have the opinion that the 5.4 is a gutless wonder, especially when it's hooked to an auto. One of our work trucks is an Expedition with a 5.4 and it does not feel as strong at highway speeds as my 5.3 did. Why does the 5.4 not feel very impressive?
Reply With Quote
  #2  
Old 11-04-2010, 02:43 AM
55 f350's Avatar
55 f350 55 f350 is offline
Post Fiend
 
Join Date: Mar 2007
Location: springfield il
Posts: 5,776
55 f350 is a splendid one to behold55 f350 is a splendid one to behold55 f350 is a splendid one to behold55 f350 is a splendid one to behold55 f350 is a splendid one to behold55 f350 is a splendid one to behold
well i dunno about gutless as the shelby and gt 40 used them .... maybe like so many others it's the program in the ecu . get a tuner or chip as it may be and it might wake it up . also the usual bolt ons like a cold air kit , exhaust , etc. will probably help . one always has to remember that everything is a compromise when these were built new for the job required , emissions , etc. so don't expect it too act like a monster capable of ripping the heads off of all passing furrin' cars cause it's not going too .
Reply With Quote
  #3  
Old 11-04-2010, 01:04 PM
galaxie641 galaxie641 is offline
Postmaster
 
Join Date: Nov 2006
Location: SE Wyoming
Posts: 4,521
galaxie641 has a very good reputation on FTE.galaxie641 has a very good reputation on FTE.galaxie641 has a very good reputation on FTE.galaxie641 has a very good reputation on FTE.
Your half ton Chevy also weighed a lot less than the 3/4 ton Ford to really fully examine it you need the power to weight ratio and look at the gear ratio.
Reply With Quote
  #4  
Old 11-05-2010, 04:23 AM
phil6608's Avatar
phil6608 phil6608 is offline
Post Fiend
 
Join Date: Jan 2007
Location: Stanton DE
Posts: 18,157
phil6608 has a brilliant futurephil6608 has a brilliant futurephil6608 has a brilliant futurephil6608 has a brilliant futurephil6608 has a brilliant futurephil6608 has a brilliant futurephil6608 has a brilliant futurephil6608 has a brilliant futurephil6608 has a brilliant futurephil6608 has a brilliant futurephil6608 has a brilliant future
I agree,
the Ford is better built and a lot heavier then a ceby..lol




Yeah,all them 5.4s are gutless.
Reply With Quote
  #5  
Old 11-05-2010, 06:32 AM
shotgunz's Avatar
shotgunz shotgunz is offline
Posting Guru
 
Join Date: Nov 2009
Location: NC
Posts: 2,016
shotgunz is a name known to allshotgunz is a name known to allshotgunz is a name known to allshotgunz is a name known to allshotgunz is a name known to allshotgunz is a name known to all
Way too many variables in this comparison.

Maintenance?
Rear end gear ratio?
Effective gear ratio (transmission and rear end gear)?
Torque strategy?
Weight (curb and loaded)?
Tire and rim size?
RPMs at crusing speed?

If you want to wake the F250 up, I suugest you contact Mike at 5startuning.com about an SCT programmer with custom tunes.

Personally I wouldn't bother with the warmer-air-than-stock after market intake (unless you are simply looking for under the hood bling) or exhaust (unless you're looking for a meaner sound - which can increase butt dyno sensitivity).
Reply With Quote
  #6  
Old 11-05-2010, 11:27 AM
AK 440 AK 440 is offline
Freshman User
Thread Starter
 
Join Date: Aug 2010
Location: Alaska
Posts: 49
AK 440 is starting off with a positive reputation.
I hadn't thought about the weight. My Ford is definitely a heavier duty truck than my Chevy was. My Chevy had 3.73 gears but I don't know what my F250 has? I figured our Expedition at work would compare pretty well to my Chevy. It just feels like it has less power and speed up past 55 than the Chevy.

I've noticed with my F250, it feels like it really likes to rev out but there is no redline on the tach so I don't know how high I can safely wind it out? I'm sure the limiter will kick in to prevent blowing it up but sometimes I think I'm winding it out to far when passing people. Does this engine make its best power well about 3000 rpm?
Reply With Quote
  #7  
Old 11-05-2010, 11:33 AM
shotgunz's Avatar
shotgunz shotgunz is offline
Posting Guru
 
Join Date: Nov 2009
Location: NC
Posts: 2,016
shotgunz is a name known to allshotgunz is a name known to allshotgunz is a name known to allshotgunz is a name known to allshotgunz is a name known to allshotgunz is a name known to all
This is for an F150, but the torque curve should be close:



The 09-10 dyno charts (5.4L 3V) can be found here.
Reply With Quote
  #8  
Old 11-05-2010, 03:25 PM
pony pony is offline
Senior User
 
Join Date: Oct 2007
Posts: 157
pony is starting off with a positive reputation.
Gutless!....don't loose sight of the fact that the 5.4 is a true "truck" engine. A long stroke engine (stroke bigger than bore) to give it lots of torque at low rpms. The Chev engine is not. Yeah the 5.4 does wheeze out at highway speeds but at low speed and rpm it is a brut for its size.
Reply With Quote
  #9  
Old 11-05-2010, 10:54 PM
EXCURSIONATOR1's Avatar
EXCURSIONATOR1 EXCURSIONATOR1 is offline
Senior User
 
Join Date: May 2010
Location: mt.prospect
Posts: 364
EXCURSIONATOR1 is gaining momentum as a positive member of FTE.
Ok wait a minute! Don't go by seat of the pants. 2 of my buddies lined up low mileage trucks a 2004 f150 6100lbs and a 2005 (5.3)chevy pickup 4x4 6000lbs. After driving the f150 and driving in the chevy my money was on the chevy. Dead even to 75mph, f150 pulled ahead over 75. Both trucks stock.

My excursion got beat bad by both but that doesn't count.
Reply With Quote
  #10  
Old 11-06-2010, 12:14 AM
EXCURSIONATOR1's Avatar
EXCURSIONATOR1 EXCURSIONATOR1 is offline
Senior User
 
Join Date: May 2010
Location: mt.prospect
Posts: 364
EXCURSIONATOR1 is gaining momentum as a positive member of FTE.
Ok here they put the 5.4 up against the 6.0 chevy.

YouTube - 7.2 Percent Hill Climb (Loaded)
Reply With Quote
  #11  
Old 11-06-2010, 03:36 AM
AK 440 AK 440 is offline
Freshman User
Thread Starter
 
Join Date: Aug 2010
Location: Alaska
Posts: 49
AK 440 is starting off with a positive reputation.
I'm not sure I understand the test? The Chevy was a 6.2L and it won, the Toyota with a 5.7 came in 2nd and the Ford was 5th. I thought GM offered a 6.0 for their gas motor?

Pony,
I know what you are saying, I like the power my Ford makes down low. Maybe it's a case of me being greedy? I just want that same feeling of power all the way thru the powerband? This thread has been helpful because the graph quantifies what I thought. The further I rev the 5.4, the more power it seems to make. I think I just need to rev the 5.4 out a lot more than I'm doing. I think I've been short shifting it too much and running the motor at too low of RPM's?
Reply With Quote
  #12  
Old 03-19-2011, 05:59 PM
Scorpion67 Scorpion67 is offline
Senior User
 
Join Date: Feb 2008
Posts: 389
Scorpion67 is starting off with a positive reputation.
The 5.3 is gutless from idle till mid range rpm, where the power comes alive. The 5.4 has stump pulling power and torque from idle till mid range rpm, where it becomes gutless and asthmatic. For trailer towing, low end torque and throttle response, the 5.4 is better. For fuel economy and spirited revving power, and exhaust note, the 5.3 is better.
Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
Want a f250 diesel. josephcostello 1999 to 2016 Super Duty 28 08-18-2016 02:52 PM
considering f250 with 6.2...but hated the power delivery katoom400 1999 to 2016 Super Duty 60 01-31-2015 12:08 AM
Worst Modern Day Truck Engines (What do you think?) 640 CI Aluminum FORD General Automotive Discussion 20 08-24-2011 06:24 AM
Just Drove the Ecoboost and 5.0 builtfordtough13 2009 - 2014 F150 48 03-20-2011 10:29 AM
New 6.2L V8 compared to 6.8L and 5.4L Tom 1999 to 2016 Super Duty 60 09-15-2010 08:29 PM


Go Back   Ford Truck Enthusiasts Forums >

Tags
1999, 2007, 46, 53, 54, chevy, engine, enines, expedition, expition, ford, gutless, limiter, performance, speed

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 Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Forum Jump


All times are GMT -5. The time now is 03:46 PM.