I am buying a 2004 F150 Supercrew next month and can't decide on the 5.4 or 4.6 engine. I am not pulling anything heavy now but might need the power later and the gas mileage is the same on both engines. Any thoughts on the new 3 valve technology on the 5.4 or the current 4.6? Is it worth the $800 dollars for the 5.4?
From what I've read, quite a few people have said that the power increase for the 5.4 is negligible due to the increased weight of the new trucks. Following that logic, it would seem the 4.6 would perform worse.
IMHO, you'd be better off getting the 5.4., but I suggest you test drive them both and see which would better suit your needs.
Not sure if Ford has their head on right sometimes, The 4.6 offers no mileage advantage over the 5.4, so im not sure why ANYONE would want this engine in their truck, I have one in my EXPY and PERSONALLY would like to shoot the guy who came up with the Idea for putting such a puny motor in such a large vehicle.
Lets Hope the new 04 is more ready then their hot to trot turblow diesel that they cant fix.
I would definitely go with the 5.4 liter because of the sheer weight of these new trucks. Even if you don't do any towing or hauling you still want to be able to get up to speed and merge with traffic without too much effort. My current ride is a 97 f150 supercab with over 150k miles on the odo and although I never tow or haul anything on a daily basis, the truck could use more power for passing.
The 4.6 gets the same mileage because it has to work harder than the 5.4
800 bucks is definately worth it to have a bigger engine. It'll probably last longer too, since it won't have to work to its capacity all the time just to get up to speed.
I tow my 19' boat with my 5.4 and my dad's 4.6. The 5.4 does a much better job at acceleration, pulling, less kickdown due to more torque, better traction (open vs. limited axles). The 5.4 does get worse gas mileage when towing, but for the gains in performance, its the way to go.