KJ Jones
March 1, 2013
Photos By: KJ Jones, Drew Phillips

2003 Ford Mustang Mach 1

Ryan Sandoval of the Superior Mustangs car club owns this 03 Mach 1 Shadow. While the car is black, Ryan anointed it with the nickname when the Snake sported its original Dark Shadow Gray Metallic paint. The 03-04 Mach 1s basically are the naturally aspirated variants of SVTs vaunted Terminator Cobras. Taking the Cobras Eaton supercharger out of the equation, theyre mechanically similar, as Mach 1s are not equipped with IRS, and automatic transmissions were available as an option for the last Stangs of the New Edge era. Cylinder heads for the Mach 1s arguably are the best street cylinder heads in the DOHC family for that time period. The heads were never given any letter identification, but they feature dual-intake, and rectangle-shaped exhaust ports that are larger than those on any other casting (other than Ford Racings FR500 race castings).

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On The Dyno

Baseline TB EXH CAI Tune Baseline vs. Tune
RPM HP TQ A/F HP TQ A/F HP TQ A/F HP TQ A/F HP TQ A/F HP TQ
4,000 207.54 265.38 12.04 216.79 284.64 12.99 208.66 267.92 13.00 191.66 251.62 13.15 223.95 294.06 12.77 16.41 28.68
4,500 230.17 268.64 12.16 246.48 287.68 12.59 234.45 273.62 12.78 234.46 273.65 13.20 257.32 300.33 12.92 27.15 31.69
5,000 271.00 284.67 12.08 271.12 284.80 12.56 274.03 287.85 12.59 275.18 289.05 12.97 279.85 293.96 12.64 8.85 9.29
5,500 261.73 249.93 12.53 260.92 249.16 12.73 264.90 252.96 12.90 265.20 253.25 13.18 268.42 256.33 12.76 6.69 6.40
6,000 260.99 228.46 12.76 262.73 229.99 12.62 266.91 233.65 12.72 268.35 234.90 12.85 269.40 235.82 12.56 8.41 7.36
6,500 n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a

2003 Mach 1 Parts List
1) BBK 62mm Throttle Body (PN 1705; $339.99)
2) Flowmaster After-Cat Exhaust System (PN 17312; $483.22)
3) JLT Ram Air Intake Kit (PN RAI2-FMM-0304-P; $259 + $30/Dark Shadow Grey paint)
4) SCT SF3 Ford Flash Tuner (PN 3015; $380)