See other engines in this family
Plymouth EGE specs: 215 ci (3.5L) 6-cylinder, 3.78 x 3.189 in (96 x 81 mm) bore and stroke, 9.6:1 compression. Rated 214 hp, 1997.
The Plymouth EGG (EGE) is oversquare — the 3.7795" bore exceeds the 3.189" stroke by 18.5% — a layout that favors airflow and RPM over leverage at the crank. The 3.189" stroke does not reach 4,000 ft/min of mean piston speed until about 7,550 RPM, so piston speed is not what limits this engine's revs — valvetrain and breathing are. Each of the 6 cylinders displaces 35.8 ci (587 cc).
9.6:1 on aluminum heads is in the range that usually runs on pump premium; aluminum sheds heat faster than iron, which makes the same number a little more forgiving.
It is one of 2 engines in the EGG family, all of them 215 ci — the differences between them are in compression, heads and rating, not displacement.
| Displacement | 215 ci / 3.5 L |
|---|---|
| Bore | 3.7795" |
| Stroke | 3.189" |
| Cylinders | 6 |
| Configuration | V6 |
| Compression ratio | 9.6:1 |
| Bore/stroke ratio | 1.185 |
| Block material | aluminum |
|---|---|
| Head material | aluminum |
| Valvetrain | SOHC |
| Fuel type | gas |
| Advertised HP | 214 hp |
| Years | 1997 |
| Bore/stroke character | 1.185 — oversquare — bore exceeds stroke, which favours higher RPM and larger valves |
|---|---|
| Mean piston speed at 6,000 RPM | 3,189 ft/min — conservative for a street engine |
| Displacement per cylinder | 35.8 ci |
| Static compression | 9.6:1 — in the range that usually runs on pump premium |
Each link opens the calculator with this engine's specs already filled in.
1 factory vehicle, 1997. Each year opens that model's engine table.