What size motor is a Vortec 4200?
4.2 LLL8 (Vortec 4200) It displaces 4.2 L; 253.9 cu in (4,160 cc), with a 93 mm 脳 102 mm (3.66 in 脳 4.02 in) bore and stroke. It has four valves per cylinder, utilizes dual-overhead cams (DOHC) design, and features variable valve timing on the exhaust cam, a first for GM Inline engines.General Motors Atlas engine - Wikipedia
