Noob, 5.4 or 4.6? MPG's?
03-09-2008, 09:20 PM
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Noob, 5.4 or 4.6? MPG's?
First off, Hello. noob to this board. In the process of maybe buying a 04+ F150 SuperCab 4x4. don't know much about F150's. Coming from a 2007 F250 FX4 Diesel 4x4 with 35's and a lift kit. Have a few general question, I hope this is the correct section I am posting in. Here goes...
1- Which is a better optio 5.4 or 4.6? pros/cons of each?
2- What kind of MPG's are you getting with what engine, and set up (looking at stock 4x4's)? Does having a Crew cab vs a Xcab hurt MPG's any? Figure all that extra weight in metal, glass and such might affect mpg's.
3- FX4, Lariat or ...XLT? I know the differences, and prefer the FX4 or lariat, but for the right price I'd take a XLT b/c I l ike the Chrome bumpers and would have more money to buy the wheels I like... ie Lariats, or aftermarkets. What do you guys think?
4- Where are the trouble spots on a 2005-2007?
5- I know they make 3.55 & 3.73 ratios in either LSD or open. Which ratio is proving better MPG's stock and which is better for some slightly larger than stock AT tires?
I appreciate the input guys in advance. I've owned a custom built Toyota rock crawler and then my new 6.0 FX4. Never owned a 1500 but I like the physical size of them for the all around use.
1- Which is a better optio 5.4 or 4.6? pros/cons of each?
2- What kind of MPG's are you getting with what engine, and set up (looking at stock 4x4's)? Does having a Crew cab vs a Xcab hurt MPG's any? Figure all that extra weight in metal, glass and such might affect mpg's.
3- FX4, Lariat or ...XLT? I know the differences, and prefer the FX4 or lariat, but for the right price I'd take a XLT b/c I l ike the Chrome bumpers and would have more money to buy the wheels I like... ie Lariats, or aftermarkets. What do you guys think?
4- Where are the trouble spots on a 2005-2007?
5- I know they make 3.55 & 3.73 ratios in either LSD or open. Which ratio is proving better MPG's stock and which is better for some slightly larger than stock AT tires?
I appreciate the input guys in advance. I've owned a custom built Toyota rock crawler and then my new 6.0 FX4. Never owned a 1500 but I like the physical size of them for the all around use.
03-09-2008, 09:30 PM
#2
Going Postal!!
First off, Hello. noob to this board. In the process of maybe buying a 04+ F150 SuperCab 4x4. don't know much about F150's. Coming from a 2007 F250 FX4 Diesel 4x4 with 35's and a lift kit. Have a few general question, I hope this is the correct section I am posting in. Here goes...
1- Which is a better optio 5.4 or 4.6? pros/cons of each?
5.4L more sack, spark plug issue
2- What kind of MPG's are you getting with what engine, and set up (looking at stock 4x4's)? Does having a Crew cab vs a Xcab hurt MPG's any? Figure all that extra weight in metal, glass and such might affect mpg's.
I just went 411miles on a 25 gallon tank of fuel
3- FX4, Lariat or ...XLT? I know the differences, and prefer the FX4 or lariat, but for the right price I'd take a XLT b/c I l ike the Chrome bumpers and would have more money to buy the wheels I like... ie Lariats, or aftermarkets. What do you guys think?
FX4 pulls more weight
4- Where are the trouble spots on a 2005-2007?
All years have issues
5- I know they make 3.55 & 3.73 ratios in either LSD or open. Which ratio is proving better MPG's stock and which is better for some slightly larger than stock AT tires?
3.73's better for pulling
I appreciate the input guys in advance. I've owned a custom built Toyota rock crawler and then my new 6.0 FX4. Never owned a 1500 but I like the physical size of them for the all around use.
1- Which is a better optio 5.4 or 4.6? pros/cons of each?
5.4L more sack, spark plug issue
2- What kind of MPG's are you getting with what engine, and set up (looking at stock 4x4's)? Does having a Crew cab vs a Xcab hurt MPG's any? Figure all that extra weight in metal, glass and such might affect mpg's.
I just went 411miles on a 25 gallon tank of fuel
3- FX4, Lariat or ...XLT? I know the differences, and prefer the FX4 or lariat, but for the right price I'd take a XLT b/c I l ike the Chrome bumpers and would have more money to buy the wheels I like... ie Lariats, or aftermarkets. What do you guys think?
FX4 pulls more weight
4- Where are the trouble spots on a 2005-2007?
All years have issues
5- I know they make 3.55 & 3.73 ratios in either LSD or open. Which ratio is proving better MPG's stock and which is better for some slightly larger than stock AT tires?
3.73's better for pulling
I appreciate the input guys in advance. I've owned a custom built Toyota rock crawler and then my new 6.0 FX4. Never owned a 1500 but I like the physical size of them for the all around use.
03-09-2008, 09:52 PM
#4
You have to take into consideration that this is a big truck. Small engines in big trucks work harder than a large one. I learned with my boat all about mileage when it comes to switching engines. I had a 5.0 with 220 hp. Then I got a 5.7 with 310 hp. Typically, a throttle that is wide open, WOT, will get half the mileage of a throttle that is running 3/4. I can run faster with the 5.7 and use less gas because the 5.7L doesn't run even close to as hard. I was also able to go way up in the prop angle, which would be similar to putting more of a granny gear in your truck. This would get better mileage, too. I think smaller engines have to be very, very small to really matter on gas when it comes to a decent-sized vehicle like an F150. I think you should go with the 5.4L if you can!
03-09-2008, 09:54 PM
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That's what I was leaning toward... but whats up with this spark plug issues? Is that where when you change them they strip out the cylinder head? Then you have to pull the head and have it serviced by a machine shop? why do t hey have issues with that? any preventative actions? like maybe a newer truck? less miles, yr?
03-09-2008, 10:17 PM
#6
That's what I was leaning toward... but whats up with this spark plug issues? Is that where when you change them they strip out the cylinder head? Then you have to pull the head and have it serviced by a machine shop? why do t hey have issues with that? any preventative actions? like maybe a newer truck? less miles, yr?
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03-10-2008, 01:32 AM
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I've got the 5.4L Fx4 SuperCrew and I get 16.4 mpg on a regular basis. A friend of mine has an STX w/ the 4.6 and he gets 14 at best and thats on the highway. I'm getting 16 driving in town, the 4.6 is a little to small for the ext cab or crew cab trucks imo.
