Which is better????
Senior Member
Joined: Dec 2006
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From: Joplin MO
Right, just because you said so and you fail to provide any support to your claim.
Reliability- The 4.6L made Ward's Top 10 Engines of all time list, the 5.4L did not. IIRC, the 4.6L didn't have cam phasing issues, throwing plugs, etc either.
The 5.4 2V (which is what the 97-03's have) does not have cam phasers. The 4.6 throws plugs just as much as the 5.4, if not more.
Modifications- The Mustang is the most mod friendly car in the world. And There are 10x more 4.6L made than 5.4Ls
Fuel Eco- Put both at 65 mph and a fuel analysis system on them and see which is pushing less fuel (GPH). I'm willing to bet the 4.6L wins.
In a F-150, the 4.6 doesn't get much better gas mileage than the 5.4 because it has to be driven harder to keep up.
4.6L -3
5.4L- 0
You are unconditionally biased.
Reliability- The 4.6L made Ward's Top 10 Engines of all time list, the 5.4L did not. IIRC, the 4.6L didn't have cam phasing issues, throwing plugs, etc either.
The 5.4 2V (which is what the 97-03's have) does not have cam phasers. The 4.6 throws plugs just as much as the 5.4, if not more.
Modifications- The Mustang is the most mod friendly car in the world. And There are 10x more 4.6L made than 5.4Ls
Fuel Eco- Put both at 65 mph and a fuel analysis system on them and see which is pushing less fuel (GPH). I'm willing to bet the 4.6L wins.
In a F-150, the 4.6 doesn't get much better gas mileage than the 5.4 because it has to be driven harder to keep up.
4.6L -3
5.4L- 0
You are unconditionally biased.
Technical Article Contributor
Joined: Oct 2005
Posts: 25,641
Likes: 19
From: MI
Far from it. I totally disagree with that ^^^. I don't believe I've ever heard that before.
Senior Member
Joined: Nov 2008
Posts: 521
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From: Katy, TEXAS/ Laramie, Wyoming
And I am mainly referring to the block and heads.Basic Modular Engine Dimensions
4.6-liter SOHC and DOHC
Aluminum block weight (bare): 86 lbs.
Iron block weight (bare): 154 lbs.
Assembled cylinder head weight: 44 lbs.*
Displacement: 4.6 liters/281 cubic inches
Bore: 3.552 inches
Stroke: 3.543 inches
Bore spacing: 3.937 inches
Main journal dia.: 2.657 inches
Rod journal dia.: 2.086 inches
Rod length: 5.933 inches
Deck height: 8.937 inches
*Assembled 302 iron head weighs approx. 55 lbs.
5.4-liter (8 cylinders) and 6.8-liter (10 cylinders)
Displacement: 5.4 liters/6.8 liters (330 cubic inches/415 cubic inches)
Bore: 3.552 inches
Stroke: 4.165 inches
Bore spacing: 3.937 inches
Main journal dia.: 2.657 inches
Rod journal dia.: 2.086 inches
Rod length: 6.657 inches
Deck height: 10.078 inches
http://www.musclemustangfastfords.co...tch/index.html
Technical Article Contributor
Joined: Oct 2005
Posts: 25,641
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From: MI
I know I would have run a poor 4six into the ground twice over pulling what I do with the 5four. Shoot, I guess they should of put the 4six in the F250 standard.
There's just no way.
Me research, yea okay buddy.
Senior Member
Joined: Oct 2005
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From: Wilmington DE
5.4 has more power ,that's all.
Phil
Member
Joined: Oct 2010
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From: Oklahoma
...which leads me to my next question, would those cams fit in our trucks? The 97-03 truck motors are all SOHC 2v motors, right?
Senior Member
Joined: Nov 2008
Posts: 1,138
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From: Oklahoma
190k on my 4.6 without much care given to it other than plugs and cops changed once and oil changed regularly.
I think the 2v 5.4 is just as reliable as a 4.6 of the same age. Fuel economy really depends - in some cases the 4.6 could be worse or better. I actually managed to average 20 mpg on an all highway trip keeping it below 2k rpms. If you're planning on modding then you might as well start with a more powerful motor.
i love my 4.6 but if it were to blow id put a 5.4 in its place.
I think the 2v 5.4 is just as reliable as a 4.6 of the same age. Fuel economy really depends - in some cases the 4.6 could be worse or better. I actually managed to average 20 mpg on an all highway trip keeping it below 2k rpms. If you're planning on modding then you might as well start with a more powerful motor.
i love my 4.6 but if it were to blow id put a 5.4 in its place.
Last edited by alex7191; Feb 24, 2011 at 11:07 PM.
Technical Article Contributor
Joined: Oct 2005
Posts: 25,641
Likes: 19
From: MI
I think your mistaken, the 5four was standard. Even in the LD I expect. You could probably order one with a 4six, there was a few. What would be the purpose. To the consumer there might be, back then I guess. In reality, both had the same mileage. Pobably why it was discontiued.
The OP's question has been answered.
The OP's question has been answered.
Senior Member
Joined: Dec 2006
Posts: 43,542
Likes: 819
From: Joplin MO
Sorry, Brew - the 4.6 was standard in the F250LD.
http://autos.yahoo.com/1999_ford_tru..._supercab_4x4/
http://autos.yahoo.com/1999_ford_tru..._supercab_4x4/