Chrysler B engine

Chrysler B engine
413 cu in (6.8 L) Cross Ram
Overview
ManufacturerChrysler
Also called
  • Chrysler RB engine
  • Chrysler Big-block
Production1958 – August 1978
Layout
ConfigurationNaturally 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+132 in (102.4 mm)
  • 4+116 in (103.2 mm)
  • 4+18 in (104.8 mm)
  • 4+316 in (106.4 mm)
  • 4+15 in (106.7 mm)
  • 4+14 in (108.0 mm)
  • 4.32 in (109.7 mm)
  • 4.342 in (110.3 mm)
Piston stroke
  • 3+38 in (85.7 mm)
  • 3+34 in (95.3 mm)
Cylinder block materialCast iron
Cylinder head materialCast iron
ValvetrainOHV 2 valves × cyl.
Compression ratio8.2:1, 10.0:1, 10.1:1, 11.0:1, 12.0:1
Combustion
Fuel systemCarter AFB or Holley carburetors; Fuel injection
Fuel typeGasoline
Oil systemWet sump
Cooling systemWater-cooled
Output
Power output170–425 hp (127–317 kW)
Torque output305–530 lb⋅ft (414–719 N⋅m)
Chronology
PredecessorChrysler 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]

  1. ^ Rarey, R.S.; Moeller, E.G. (1959). "Chrysler Corporation's New V-8 Engine". SAE Transactions. 69: 95.