GM small blocks V8 engines began in 1955 and became increasingly popular in the American culture. The 350 cubic inch (5.7 Liter) is the most popular and best known and most widely used small block of all time.
GM big block V8 engines are a large displacement engine that was developed in the late 1950s and early 1960s. Modeled after GM’s popular small block V8, but scaled larger to provide more power and torque to satify America’s desire for speed and strength.
The basics of a GM block is the bottom and top end of an engine.
- Bottom End – The heavy cast iron bottom end of an engine made to house the pistons, crankshaft, and oil pump. On most newer cars you can’t even see it, it is buried underneath the cylinder head and the engine’s ancillary equipment, in the center of the engine bay.
- Top End – The engine top end regulate the flow of air and fuel into the engine cylinders and consists of the engine top end consists of the cylinder heads, camshaft, connecting rods and valves.