Cadillac 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.^[1]

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.