The H3's Vortec 3500 I-5 engine features all-aluminum construction, dual overhead camshafts, and four valves per cylinder. The engine has a high 10:1 compression ratio, electronic throttle control, exhaust cam phasing, coil-on-plug ignition, direct-mount accessories, and easy maintenance features. The cast-aluminum five-cylinder engine block and aluminum cylinder head is produced using the same lost foam casting process as the Vortec 4200 I-6. This process allows more exact dimensional control while reducing machining efforts in oil galleries and coolant and other internal passages. It has 225 lb-ft of torque at 2,800 rpm and 220 hp at 5,600 rpm. What a great engine this would make for an engine swap into a project vehicle! While it doesn't look it here, there's plenty of room to access everything under the hood.