Chrysler Slant-6 engine

Chrysler Slant Six (G, RG) engine
"Super 225" in a 1965 Plymouth Barracuda
Overview
ManufacturerChrysler Corporation
Production1959–2000
Indianapolis Foundry
Trenton Engine Plant
Layout
ConfigurationI6
Displacement170 cu in (2.8 L)
198 cu in (3.2 L)
225 cu in (3.7 L)
Cylinder bore3+25 in (86.4 mm)
Piston stroke3+18 in (79.4 mm)
3+1625 in (92.5 mm)
4+18 in (104.8 mm)
Cylinder block materialCast iron
Aluminum
Cylinder head materialCast iron
ValvetrainOHV 2 valves per cylinder
Compression ratio8.2:1–8.5:1
Combustion
Fuel systemCarburetor
Fuel typeGasoline
Oil systemFull pressure w/full-flow filter & gerotor oil pump
Cooling systemJacketed block, Water pump to radiator
Chronology
PredecessorFlathead 218 and 230" I6
Successor239 cu in (3.9 L) V6
215-245-265 Hemi-6 (Australia only)

The Slant-Six is the popular name for a Chrysler inline-6 internal combustion engine with an overhead valve reverse-flow cylinder head and cylinder bank inclined at a 30-degree angle from vertical. Introduced in 1959 for the 1960 models, it was known within Chrysler as the G-engine. It was a clean-sheet design that began production in 1959 at 170 cubic inches (2.8 L) and ended in 2000 at 225 cubic inches (3.7 L). It was a direct replacement for the flathead Chrysler straight six that the company started business with in 1925 until the old design was discontinued in the 1960s.