Our original plan was to use a hand-ported Fox Lake P-51 intake but it didn't make it back in time for the test. That forced Dez to pull a Trick Flow intake off the shelf to put in its place. We knew the Trick Flow wouldn't have a problem sitting on top of our better-breathing heads and not lose torque in the lower rpm ranges. "There is a balance between the cross-section area and length of a port (intake manifold port). Every design, unfortunately, is a compromise. The TFS manifold was designed to feed a 4.6L to 8,000 rpm, while minimizing a shift in the torque curve toward lower speeds. This is why you see dual-port intakes or charge-motion plates on smaller, newer engines. At slower engine speeds, less air is consumed, minimizing the cross-section increases velocity for improved cylinder filling and torque production, while at high engine speeds, cross-section is maximized to supply the volume being consumed by the engine," said Noe. In the end, despite the power the '00 Stang makes, it's still a street car and the intake is a nice blend for its dual-purpose use. The BBK 70mm throttle body was carried over from our original testing.
We continued to employ a ProCharger D1SC blower with the company's two-core front-mounted intercooler. It is a healthy street blower capable of producing enough air to make 925 hp (at the crank) on a properly prepared engine-according to ProCharger. After experiencing belt slip in Part 2 ("Two-Cam Belt-Slippin' Jam," Dec. '09), we added a ProCharger eight-rib pulley conversion kit. Initially, we were stuck with a 3.40-inch blower pulley, which regulated boost to 17 psi. Not to disappoint Smitty, Dez decided to get a 3.150-inch blower pulley for serious boost. It would spin the supercharger much harder when combined with our new 7,000-rpm redline. "I ordered a pulley from a new company, Carbonite. The Pro-Grip pulley is all the rage in the NMRA EFI-Renegade ranks where they are limited to an eight-rib pulley setup. It helps belt grip through a special coating applied to the contact area of the pulley," commented Dez. The Pro-Grip's texture is rough and reports from the streets say it doesn't tear up the belt like some other traction-enhancing pulleys on the market. The Snow Performance methanol injection kit was also used so Dez could get more timing to go along with the big boost. We didn't want to let the boss down, and this plan was sure to bring big power from the 2000 Mustang GT street car.
The short-block remained the same-a stock block bored 0.020 inch (3.572-inches), cast-steel crank (stock 3.543-inch stroke size), forged pistons, and cheap steel rods. Total displacement checks in at 284ci using the V-8 displacement formula of Bore x Bore x Stroke x 6.2832. While our tiny engine held up to a barrage of chassis dyno tests at 20 psi of boost and over 7,000 rpm, it won't last long at that level. We definitely recommend adding a billet crank and even a good set of billet rods if you dare to venture in the realm of this combination.