There are TWO 5.4's in production, they are NOT the same motor.
The first was the "truck" application, big SUV's etc. That 5.4 was based on the 4.6 technology.
The NEW 5.4 was developed for the new Ford GT(-40). They started with a clean sheet of paper. As fate would have it the bore and stroke were the same as the original 5.4, but thats ALL they have in common!
The new block was designed from the start to be dry sump with unusual casting techniques and oiling system. It was also designed from the start to be super charged. The bottom end is particularly impressive for it's strength.
500 hp at 6,000 rpm with 12 psi boost. 400 Ft. Lbs torque at 2000 rpm!!!!! 500 Ft. Lbs. at 4500 rpm. A torque monster!
The next generation of the NEW 5.4 engine will be modified to accept a wet sump (
oil pan) and the engine WILL be used in passenger car applications. A really HOT full size Ford sedan anyone?
Ernie
You know, down the road this going to be like the 351 problem. Is that a 351W or a 351C? Two entirely different motors! I HATE when Ford does that!