The 366 Chevy engine is an eight-cylinder, six-liter engine with a bore of 3.935 inches and a stroke of 3.76 inches. It has 300 horsepower at 4,400 revolutions per minute. It is a tall-deck engine with a 0.4-inch deck.
The 366 Chevy engine features a cast-iron block with aluminium cylinder heads. It uses four rings on the piston, and Chevrolet designed it from the beginning as a truck engine. The pistons in this engine have a compression ratio of 9.4-to-1. The overhead valve system uses eight cylinders with aluminium heads. There are two valves per cylinder, bringing the total number of valves to 16.
The Chevy 366 engine produces 360 feet-pounds of torque and has a sequential, multi-port fuel induction system that delivers fuel to the engine. It uses unleaded regular fuel. The 366 Chevy engine has a towing capacity of 10,500 pounds. Its maximum Gross Combination Weight Rating, which refers to the total amount of weight that it carries, is 16,000 pounds.
Chevrolet made the 366 Chevy engine for school buses and medium-sized pickup trucks. Examples of vehicles equipped with this engine include the Sierra 3500 and the GMC Silverado 2500. Chevy stopped the production of the Chevy 366 engine in the mid-1990s.