400hp 4.6L FRPP Supercharger (7 psi)
This 4.6L Two-Valve combination included a complete engine supplied by Sean Hyland Motorsport. Built as a test motor, the 4.6 featured forged internals, including a Cobra crank, forged rods, and pistons. The pistons were selected to duplicate the stock compression ratio when com-bined with the factory PI heads. The SHM long-block was upgraded with a set of XE262H (non-PI) cams from Comp Cams as well as a set of Kooks long-tube headers. In normally aspirated trim, the mild PI combination produced 297 hp and 344 lb-ft of torque. Torque production exceeded 300 lb-ft from 2,500 rpm all the way to 5,100 rpm. After adding the FRPP supercharger (no intercooler), 70mm throttle body, and 3.4-inch blower pulley (up from the standard 3.6 inches), the SHM PI motor produced 427 hp and 425 lb-ft of torque. Torque production now exceeded 400 lb-ft from 3,200 rpm to 5,000 rpm at a maximum boost level of just 7 psi. Obviously, there's a great deal more power left in this combination with ported heads, higher boost, and even wilder cam timing.
| Specs: 400 hp |
| Block: | Stock '00 4.6L Two-Valve iron |
| Crank: | Stock '00 4.6L Four-Valve Cobra steel (stock stroke) |
| Rods: | SHM forged |
| Pistons: | SHM forged-stock |
| Compression: | 9.5:1 |
| Cylinder Heads: | Stock '00 4.6L 2V PI |
| Cams: | Comp Cams XE262H |
| Intake Manifold: | '00 4.6L Two-Valve PI |
| Throttle Body: | Accufab 75mm (N/A), FRPP 70mm (SC) |
| Inlet Elbow: | Accufab |
| Injectors: | 19 lbs N/A, 36 lbs SC |
| Management System: | FAST |
| Headers: | Kooks 1-5/8 in |
| Exhaust: | 18-in collector extension |
| Fuel: | 91- and 100-octane Rockett Brand racing fuel |
| Blower: | FRPP Two-Valve Roots-style |
| Blower Pulley: | 3.4 in |
| Intercooler: | N/A |
| Boost: | 6.9 psi |