Having run our header test in the last issue on the normally aspirated version of the GT1000 motor, we were anxious to retest the motor with some boost. You will remember that the 5.4L GT1000 was ...

Made from cast iron, the factory manifolds of the Godzilla engine are pretty decent. Be that as it may, long tube headers from American Racing Headers are much lighter, and they unlock a little more ...

Here's our subject, a '70 Torino that has received a rack-and-pinion swap. Now the driver-side header doesn't fit. After locating all the necessary parts (flange, 1-3/4-inch primary J bends and ...

It's no secret that there is plenty of power hiding in your exhaust system, especially with the right set of headers. But often the question is how much power is there to unlock. At times there can be ...