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Dodge LA 360 4-bbl ELB specs: 360 ci (5.9L) 8-cylinder, 4.00 x 3.579 in (101.6 x 90.9 mm) bore and stroke, 8.4:1 compression. Built 1977.
The Dodge LA 360 4-bbl ELB is oversquare — the 4" bore exceeds the 3.5787" stroke by 11.8% — a layout that favors airflow and RPM over leverage at the crank. The 3.5787" stroke puts mean piston speed at 4,000 ft/min around 6,700 RPM, which is where a production bottom end is generally considered at its limit. A rod ratio of 1.711 is in the range most production engines fall in. Each of the 8 cylinders displaces 45.0 ci (737 cc).
8.4:1 on iron heads is low by modern standards and generally happy on regular pump fuel.
It is one of 17 engines in the Dodge 360ci family, all of them 360 ci — the differences between them are in compression, heads and rating, not displacement.
| Displacement | 360 ci / 5.9 L |
|---|---|
| Bore | 4" |
| Stroke | 3.5787" |
| Cylinders | 8 |
| Configuration | V8 |
| Compression ratio | 8.4:1 * |
| Rod length | 6.123" |
| Rod ratio | 1.711 |
| Bore/stroke ratio | 1.118 |
* Compression ratio from a single source; not yet cross-verified.
| Block material | cast iron |
|---|---|
| Head material | cast iron |
| Valvetrain | OHV |
| Fuel type | gas |
| Firing order | 1-8-4-3-6-5-7-2 |
| Years | 1977 |
| Bore/stroke character | 1.118 — oversquare — bore exceeds stroke, which favours higher RPM and larger valves |
|---|---|
| Mean piston speed at 6,000 RPM | 3,579 ft/min — in the range typical of performance street engines |
| Rod ratio | 1.711 — moderate — the range most production V8s fall in |
| Displacement per cylinder | 45.0 ci |
| Static compression | 8.4:1 — low by modern standards, generally happy on regular pump fuel |
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2 factory vehicles, 1977. Each year opens that model's engine table.