The M840T Engine The McLaren M840T is a 4.0-liter twin-turbocharged V8 that powers the 720S, 720S Spider, 765LT, and 765LT Spider. Developed in partnership with Ricardo, it is one of the most power-dense production V8 engines ever built. Engine Specifications Specification 720S 765LT Displacement 3,994 cc 3,994 cc Configuration 90° V8, flat-plane crank 90° V8, flat-plane crank Turbochargers Twin-scroll Twin-scroll (higher flow) Peak Power 710 HP @ 7,250 RPM 755 HP @ 7,500 RPM Peak Torque 568 lb-ft @ 5,500 RPM 590 lb-ft @ 5,500 RPM Redline 8,500 RPM 8,500 RPM Compression Ratio 8.7:1 8.7:1 Dry Weight (engine) 198 kg...