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The last GMC-only straight six was the 270-cubic-inch (4.4 L) 270. It was produced from 1941 through 1963, and was an OHV/pushrod engine. This is a raised-deck engine. The bore was 3.78125" (same as 256) and stroke was 4 inches (101.6 mm). Power listed in 1963 as 133 HP @ 3600 rpm; torque 244 lb ft @ 1300 rpm.
Water-cooled. Output. Power output. 150–275 hp (112–205 kW) [1][2] Torque output. 260–630 lb⋅ft (353–854 N⋅m) [3][4] The GMC V6 is a family of 60-degree V6 engines produced by the GMC division of General Motors from 1959 through 1974. It was developed into both gasoline and diesel versions, and produced in V8 and V12 derivatives.
A spark plug.The spark gap is at the bottom. A spark plug uses a spark gap to initiate combustion.The heat of the ionization trail, but more importantly, UV radiation and hot free electrons (both cause the formation of reactive free radicals) [citation needed] ignite a fuel-air mixture inside an internal combustion engine, or a burner in a furnace, oven, or stove.
Spark plug with single side electrode An electric spark on the spark plug. A spark plug (sometimes, in British English, a sparking plug, [1] and, colloquially, a plug) is a device for delivering electric current from an ignition system to the combustion chamber of a spark-ignition engine to ignite the compressed fuel/air mixture by an electric spark, while containing combustion pressure within ...
Torque output. 160 lb⋅ft (217 N⋅m) Chronology. Successor. Ecotec engine. Quad 4 is the name of a family of principally DOHC inline four-cylinder engines produced by General Motors ' Oldsmobile division between 1987 and 2002; a single SOHC version was built between 1992 and 1994. Its name was derived from the engine's four-valve, four ...
Engine knocking. In spark-ignition internal combustion engines, knocking (also knock, detonation, spark knock, pinging or pinking) occurs when combustion of some of the air/fuel mixture in the cylinder does not result from propagation of the flame front ignited by the spark plug, but when one or more pockets of air/fuel mixture explode outside ...
GMC's own V8 was the 637-cubic-inch (10.4 L) unit, which was essentially a 478 V6 with two cylinders added. It shared the 5.125 in × 3.86 in (130.2 mm × 98.0 mm) bore and stroke and used a single camshaft. It was manufactured in gasoline and diesel versions, and was the largest-displacement production gasoline V8 ever made for highway trucks.
The Buick V6 is an OHV V6 engine developed by the Buick division of General Motors and first introduced in 1962. The engine was originally 198 cu in (3.2 L) and was marketed as the Fireball engine. GM continued to develop and refine the 231 cu in (3.8 L) V6, eventually and commonly referred to simply as the 3800, through numerous iterations.