4.6 or 5.4l ? - FordTough.ca - Home of Canadian Ford Truck Enthusiasts
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post #1 of 13 (permalink) Old 03-25-2010, 01:38 PM Thread Starter
 
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4.6 or 5.4l ?

So looking to buy my first truck. I have a good deal lined up on an FX4 Crew 6'5 foot box. It has the 5.4 and the 3.73 rear end.

Just wondering if i went to the XLT with a 4.6 and 3.55 limited slip, if there would be a marked difference if fuel consumption?

thanks
Dave
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post #2 of 13 (permalink) Old 03-25-2010, 04:04 PM
 
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Difference , hmmmm, slight in the city only...... but, not allot and that would depend more on how you use your truck on a daily basis.... the difference (in real world driving, not DOT or NHSTA standards) is negligable IMHO. Go with the truck you really like and has the features you want..... if fuel consumption is a concern at all, you shouldn't be looking at any truck really....... if it makes you feel any better, our new 5.4 Screw gets better milage than our older Nissan Pathfinder and it only had a 3.5 V6, LOL.

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post #3 of 13 (permalink) Old 03-25-2010, 05:47 PM
 
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Go with the 5.4 with the 3.73. Mileage difference in minimal and the 5.4 will be significantly more powerful.

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post #4 of 13 (permalink) Old 03-25-2010, 09:09 PM
 
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depends what you need it for. We have the 4.6 and find it powerful enough. It gets better mileage then the 5.4 and if you dont need the extra then why pay for it and waste it in fuel as well. You will notice the diff in city and combined. Hwy only they are almost the same.Dealer said 3.73 would cause more fuel use as well.
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post #5 of 13 (permalink) Old 03-26-2010, 12:27 AM
 
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Quote:
Originally Posted by herbz View Post
Go with the 5.4 with the 3.73. Mileage difference in minimal and the 5.4 will be significantly more powerful.
Not necessarily true. If it a 3V 4.6 then the power difference is significantly less. FWIW I have a 2V 4.6 with 3.73's and 32's, the truck has plenty of snap for me.

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post #6 of 13 (permalink) Old 03-26-2010, 08:38 AM Thread Starter
 
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Thanks for the replies guys.
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post #7 of 13 (permalink) Old 03-26-2010, 04:01 PM
 
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if your going to be touring around town get a 4.6l in a reg cab short box(lighter body)but if your going to be towing/hauling get a 5.4l for the better torque output(better yet wait for the 2011 6.2l)


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post #8 of 13 (permalink) Old 03-26-2010, 10:16 PM
 
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Go with the 5.4. Then you'll never have to regret that you didn't. Just like tires and TV's. If you don't buy the biggest when you have the oppurtunty, you end up buying the bigger down the road anyway, and spending more in the long run.

Not a technical answer, but very true.

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post #9 of 13 (permalink) Old 03-31-2010, 09:11 PM
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Get the 5.4 there is very little difference in mpg IF any at all. Driving style will play the biggest role as well as city/hwy mix. I am getting better mileage than my buddy with the 4.6. There is no free ride, the SCREW is a BIG HEAVY truck the 4.6 just works harder getting A to B.
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post #10 of 13 (permalink) Old 03-31-2010, 09:16 PM
 
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dont waste your $ on the upgrade IMOP if you dont need it. 4.6 is plenty of snap and is better on fuel as long as your not a regular heavy hauler. Wasn't worth the upgrade cost to me. But its a personel choice.
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