See other engines in this family
Jeep V-304 specs: 304 ci (5.0L) 8-cylinder, 3.75 x 3.44 in (95.3 x 87.4 mm) bore and stroke, 8.4:1 compression. Built 1972–1973. Used in the Jeep Jeepster.
The Jeep V-304 is oversquare — the 3.75" bore exceeds the 3.44" stroke by 9.0% — a layout that favors airflow and RPM over leverage at the crank. The 3.44" stroke puts mean piston speed at 4,000 ft/min around 7,000 RPM, which is where a production bottom end is generally considered at its limit. Each of the 8 cylinders displaces 38.0 ci (623 cc).
8.4:1 on iron heads is low by modern standards and generally happy on regular pump fuel.
It is one of 16 engines in the AMC V8 family, the smallest at 304 ci. 2 factory variants share these dimensions across 1972–1973.
| Displacement | 304 ci / 5 L |
|---|---|
| Bore | 3.75" |
| Stroke | 3.44" |
| Cylinders | 8 |
| Configuration | V8 |
| Compression ratio | 8.4:1 |
| Bore/stroke ratio | 1.09 |
| Block material | cast iron |
|---|---|
| Head material | cast iron |
| Valvetrain | OHV |
| Fuel type | gas |
| Firing order | 1-8-4-3-6-5-7-2 |
| Years | 1972–1973 |
| Bore/stroke character | 1.090 — oversquare — bore exceeds stroke, which favours higher RPM and larger valves |
|---|---|
| Mean piston speed at 6,000 RPM | 3,440 ft/min — conservative for a street engine |
| Displacement per cylinder | 38.0 ci |
| Static compression | 8.4:1 — low by modern standards, generally happy on regular pump fuel |
Each link opens the calculator with this engine's specs already filled in.
These records share identical bore, stroke, displacement and compression. They differ by model year and factory power rating.
| Year | Advertised HP | Code |
|---|---|---|
| 1972 | — | V-304 |
| 1973 | — | V-304 |
1 factory vehicle, 1972–1973. Each year opens that model's engine table.