| Chrysler Slant Six (G, RG) engine | |
|---|---|
 "Super 225" in a 1965 Plymouth Barracuda | |
| Overview | |
| Manufacturer | Chrysler Corporation |
| Production | 1959–2000 Indianapolis Foundry Trenton Engine Plant |
| Layout | |
| Configuration | Straight-6 |
| Displacement | 170 cu in (2.8 L) 198 cu in (3.2 L) 225 cu in (3.7 L) |
| Cylinder bore | 3+2⁄5 in (86.4 mm) |
| Piston stroke | 3+1⁄8 in (79.4 mm) 3+16⁄25 in (92.5 mm) 4+1⁄8 in (104.8 mm) |
| Cylinder block material | Cast iron Aluminum |
| Cylinder head material | Cast iron |
| Valvetrain | OHV 2 valves per cylinder |
| Compression ratio | 8.2:1–8.5:1 |
| Combustion | |
| Fuel system | Carburetor |
| Fuel type | Gasoline |
| Oil system | Full pressure w/full-flow filter & gerotor oil pump |
| Cooling system | Jacketed block, Water pump to radiator |
| Chronology | |
| Predecessor | Flathead 218 and 230" I6 |
| Successor | 239 cu in (3.9 L) V6 215-245-265 Hemi-6 (Australia only) |
The Chrysler Slant-Six is the popular name for an overhead valve inline-6 engine produced by Chrysler Motors between 1959 and 2000. Featuring a reverse-flow cylinder head and cylinder bank inclined at a 30-degree angle from vertical, it was introduced in 170 cu in (2.8 L) and 225 cu in (3.7 L) displacements for the 1960 model year. It was a clean-sheet design known within Chrysler as the G-engine, built as a direct replacement for the flathead Chrysler straight six that the company started business with in 1925.
The design proved very successful, being utilized in cars, trucks, boats, and agricultural, and industrial applications.