Has anyone noticed......

[Cdash]

Has anyone noticed the new ordering guides for the 5.4l engine? I see that you can now get 3.73LS with the 5.4 engine! Anybody have any comments on the 3.73 with the 5.4l? I like the idea of the mileage of the 3.73 without having to give up the limit slip. I may just have to call and get my order changed!

[KXHauler]

Folks with the 5.4L + 3.73 dont seem to be getting that much better mpg than with the 5.4L + 4.10.
City mileage is the same, and highway mileage may be .5mpg better or so with the 3.73.

I have the 4.10LS and I think this is a good ratio for the 5.4L. I have the 5sp, and RPM's at 55 are around 1850 or so. and around 2400 at 70. Not tremendously high rpm, and yet still into meat of the power/torque curve of the 5.4L.

Remember, the stock SuperDuty tires are larger than an F150. The SuperDuty with a 3.73 is about like an F150 with a 3.55, except the SD weighs a good bit more.

If you do alot of highway driving, empty, and don't plan on getting larger tires, then the 3.73 advantages will show..

However, if you do mixed driving (city + highway), haul or tow, or plan on getting larger tires, then I think the 4.10 is a better ratio.

My opinions.

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00 F250 SC 4x2 5.4L 5sp 4.10LS

[rfreas]

well said.....couldnt agree more rf

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96 F-350 SRW 4x4 5.8 e4od royal blue

[crewzer]

I have the 5.4 with an AT and the 4.10 LS rear, and I too think it's a good combo, especially with the AT. MY towing GCW is about 10,500 lbs, and it's pretty effortless at 2,000 rpm and 65 mph.

I test drove an empty Excursion w/ the 5.4, AT and a 3.73 and found it pretty lethargic.

Cphilip, on the other hand, has a 5.4, MT and 3.73, and is pretty happy with his configuration...

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crewzer -- Y2K F250 SD 4X2 CC SB XLT 5.4LV8 AT 4.10LS TTPkg Black/Silver