Chrysler B engine

Chrysler B engine
413 cu in (6.8 L) Cross Ram
Overview
Manufacturer	Chrysler
Also called	Chrysler RB engine Chrysler Big-block
Production	1958 – August 1978
Layout
Configuration	Naturally aspirated 90° V8
Displacement	350 cu in (5.7 L) 361 cu in (5.9 L) 383 cu in (6.3 L) 400 cu in (6.6 L) 413 cu in (6.8 L) 426 cu in (7.0 L) Wedge 440 cu in (7.2 L)
Cylinder bore	4+1⁄32 in (102.4 mm) 4+1⁄16 in (103.2 mm) 4+1⁄8 in (104.8 mm) 4+3⁄16 in (106.4 mm) 4+1⁄5 in (106.7 mm) 4+1⁄4 in (108.0 mm) 4.32 in (109.7 mm) 4.342 in (110.3 mm)
Piston stroke	3+3⁄8 in (85.7 mm) 3+3⁄4 in (95.3 mm)
Cylinder block material	Cast iron
Cylinder head material	Cast iron
Valvetrain	OHV 2 valves × cyl.
Compression ratio	8.2:1, 10.0:1, 10.1:1, 11.0:1, 12.0:1
Combustion
Fuel system	Carter AFB or Holley carburetors; Fuel injection
Fuel type	Gasoline
Oil system	Wet sump
Cooling system	Water-cooled
Output
Power output	170–425 hp (127–317 kW)
Torque output	305–530 lb⋅ft (414–719 N⋅m)
Chronology
Predecessor	Chrysler Hemi engine

The Chrysler B and RB engines are a series of big-block V8 gasoline engines introduced in 1958 to replace the Chrysler FirePower (first generation Hemi) engines. The B and RB engines are often referred to as "wedge" engines because they use wedge-shaped combustion chambers; this differentiates them from Chrysler's 426 Hemi big block engines that are typically referred to as "Hemi" or "426 Hemi" due to their hemispherical shaped combustion chambers. The corporation had been seeking a smaller and lighter replacement for its FirePower engines, in part because new styling dictates meant moving the engine forward in the chassis which negatively affected weight distribution.^[1]