Pontiac straight-6 engine

Pontiac straight-6 engine
Pontiac straight-6 engine
Overview
Manufacturer	Pontiac (General Motors)
Production	1926-1969
Layout
Configuration	Naturally aspirated Straight-6
Displacement	186.7 cu in (3.1 L); 200 cu in (3.3 L); 208 cu in (3.4 L); 215 cu in (3.5 L); 223 cu in (3.7 L); 230 cu in (3.8 L); 239 cu in (3.9 L); 250 cu in (4.1 L);
Cylinder bore	3.25 in (82.6 mm) (186 cuin.)
Piston stroke	3.75 in (95.3 mm) (186 cuin.)
Cylinder block material	Cast iron
Cylinder head material	Cast iron
Valvetrain	Sidevalve; OHV or SOHC (1964-1969)
Compression ratio	4.8:1, 4.9:1, 6.2:1, 6.5:1, 6.8:1, 7.0:1, 7.7:1 10.5:1
Combustion
Fuel system	Rochester Quadrajet or Carter Carburetors
Fuel type	Gasoline
Oil system	Wet sump
Cooling system	Water-cooled
Output
Power output	40–230 hp (29.8–171.5 kW)
Torque output	150–193 lb⋅ft (203–262 N⋅m)

The Pontiac straight-6 engine is a family of inline-six cylinder automobile engines produced by the Pontiac Division of General Motors Corporation in numerous versions beginning in 1926.