Cadillac V8 engine

V8 engine
V8 engine
	A 331 series V8 from the 1950s
Overview
Manufacturer	Cadillac (General Motors)
Also called	Type 51, Monobloc, LaSalle, Northstar, Blackwing
Production	1914–present
Layout
Configuration	90° V8
Displacement	244 cu in (4.0 L); 267 cu in (4.4 L); 279 cu in (4.6 L); 307 cu in (5.0 L); 314 cu in (5.1 L); 322 cu in (5.3 L); 341 cu in (5.6 L); 346 cu in (5.7 L); 350 cu in (5.7 L); 353 cu in (5.8 L); 365 cu in (6.0 L); 368 cu in (6.0 L); 376 cu in (6.2 L); 390 cu in (6.4 L); 425 cu in (7.0 L); 429 cu in (7.0 L); 472 cu in (7.7 L); 500 cu in (8.2 L);
Cylinder bore	3.125 in (79.4 mm); 3.375 in (85.7 mm); 3.38 in (85.9 mm); 3.5 in (88.9 mm); 3.8 in (96.5 mm); 4 in (101.6 mm); 4.082 in (103.7 mm); 4.125 in (104.8 mm); 4.3 in (109.2 mm);
Piston stroke	3.875 in (98.4 mm); 4 in (101.6 mm); 4.06 in (103.1 mm); 4.304 in (109.3 mm); 4.5 in (114.3 mm); 4.94 in (125.5 mm); 5.125 in (130.2 mm);
Cylinder block material	Cast iron; Aluminium
Cylinder head material	Cast iron; Aluminium
Valvetrain	L-head; OHV 2 valves × cyl.; DOHC 4 valves × cyl.;
Compression ratio	8.5:1, 10.0:1, 10.5:1
Combustion
Supercharger	With intercooler (in 4.4 L and 6.2 L LSA engines)
Turbocharger	Twin-turbo (in 4.2 L engine)
Fuel system	Rochester Quadrajet 4-barrel carburetor; Bendix Electronic FI; Throttle-body fuel injection; Digital fuel injection;
Fuel type	Gasoline
Cooling system	Water-cooled
Output
Power output	70–550 hp (52–410 kW)
Torque output	265–640 lb⋅ft (359–868 N⋅m)
Dimensions
Dry weight	595 lb (270 kg)

The term Cadillac V8 may refer to any of a number of V8 engines produced by the Cadillac division of General Motors since it pioneered the first such mass-produced engine in 1914.

Most commonly, such a reference is to one of the manufacturer's most successful, best known, or longest-lived 90° V8 engine series. These include the pioneering overhead valve 331 cu in (5.4 L) cu in introduced in 1949, made in three displacements up to 390 cu in (6.4 L); a 390 cu in (6.4 L) introduced in 1963 that grew to 429 cu in (7.0 L); and a 472 cu in (7.7 L) introduced in 1968 and enlarged to 500 cu in (8.2 L). Also notable was the Northstar, which debuted in 1992 as a 4.6 litre, and was also produced in 4.4 L and 4.2 L versions.

When the Northstar engine series ended production in 2010, it became the last General Motors division to retain its own proprietary V8 design. This changed when Cadillac created the twin-turbo "Blackwing" engine in 2019.