For Ford Inline-6 Turbo & Supercharged Engines

If your goal is to make your boosted Ford six-cylinder downright unruly, the FLAT NASTY SIX is built to deliver exactly that—big airflow, hard midrange hit, and a wicked exhaust note that says you’re not messing around.

RPM Range:
2200–5500 rpm—pulls hard through the mid and upper powerband.

Boost Compatibility:

• Supports up to 12 psi on 93 octane with 10% ethanol

• For over 12 psi, switch to E85 or race gas to keep things alive and happy

Camshaft Specifications:

• Lift: .578”/.578” (with 1.73 ratio rockers)

• Advertised Duration: 278°/278°

• Duration @ .050” Lift: 226°/226°

• LSA: 112°, no advance

Why You Want It:
Designed for serious street and race builds, the FLAT NASTY SIX has enough duration and lift to feed big compressors while maintaining enough vacuum for power brakes and street drivability. Expect crisp throttle response and big torque that won’t run out on the top end.

Tech Tip:
Double-check piston-to-valve clearance and spring pressure—this cam doesn’t play nice with tired valvetrain parts.