The 2004 F150 with the 5.4L three valve engine has a similar device installed in the intake manifold to head ports. It is called a charge air motion device. Simply a shaft with plates about half the size of the intake runner that cause the tumble effect at lower speeds to increase torque and...
There has been some use of reverse flow cooling. GM did it on certain engines with apparent success. Cooling the heads first makes a great deal of sense as it is where most of the heat is generated and one could expect a faster warm up of the block to operating temperature. Here is a website...
