Our�Black Mamba Camshaft is designed for positive displacement�superchargers. This is the popular camshaft that is installed in the Black Mamba SRT8 Jeep. It can be used in a 392 with Drop In pistons and rods, but requires a high stall torque converter and works best with higher numerical gear ratios. This is also a good fit for a Hellcat Stroker engine (400+CI). Very aggressive idle sound.� This Camshaft Requires:� Higher Stall Torque Converter� .083 or .120 wall Pushrod Upgrade� Long Tube Headers� PSI 1511 or 1516 Valve Spring Kit� Phazer Limiter Features: HEMI VVT cam grind� PN - MM-BLKMAMBA INT @50-234 lift .608/1.65rr EXH @50-24x lift .597/1.65rr LSA 116 https://youtu.be/12MsOJiMUT8