Template:GM mid-century engine timeline

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Type			1940s										1950s										1960s										1970s
			0	1	2	3	4	5	6	7	8	9	0	1	2	3	4	5	6	7	8	9	0	1	2	3	4	5	6	7	8	9	0	1	2	3	4	5	6	7	8	9
Gasoline	Flat	6																					Turbo-Air 6
	Inline	4	Opel Olympia OHV																									Opel CIH
																							Trophy																	Iron Duke
																								Chevrolet 153
																									Opel OHV
																										Vauxhall OHV
																													Vauxhall Slant-4
																																	Chevrolet 2300								Starfire
																																						Chevette*
		6	Oldsmobile
			Pontiac Flathead																								OHV		OHC
			Opel OHV																											Opel CIH
			Chevrolet Stovebolt
															Chevrolet Turbo-Thrift
			GMC
											Holden Grey																Holden Red
		8	Oldsmobile
			Pontiac
			Buick
	V	6																				GMC 60°																				60°
																									Buick
																																									90°
		8	Cadillac									Cadillac OHV																			Cadillac OHV
												Oldsmobile															Oldsmobile
																Buick Nailhead														Buick Big Block
																		Chevrolet Small Block
																		Pontiac
																					Chevrolet Big Block
																								Buick Small Block
																														GMC 60°
																																Holden
		12																					GMC 60°
Diesel	Inline	4																																	Opel CIH
	V	6																										GMC 60°
		8																											GMC 60°											Oldsmobile
Two-Stroke Diesel	multiple	multiple	Series 71
																				Series 53
	V	multiple																																			Series 92
Type			1940s										1950s										1960s										1970s
Notes			* The design origin of this engine is disputed.