Re: 5.4L Crown Vic - really short video.
Hum? Anybody can put low gears in a car and light the tires at the cost of mileage and driveability.
Stock 5.4s don't run much better than stock 4.6s and I have not had good results with JUST intake mods on 5.4s.
Show me a daily driver CV, with 3:23's, that's quick, gets 20+mpg, and cruises on the freeway at 75, and you're probably looking at a properly built 5.4 under the hood (heads, cam, intake, exhaust and tune, all aimed at torque, not screaming RPMs).