Bore, stroke, displacement and compression for all 10 Toyota A-series engines, compared side by side. Plus rod ratio and head specs where published.
| Displacement | 96.9–107.5 ci |
|---|---|
| Cylinders | 4 |
| Bore | 3.189" |
| Stroke | 3.031–3.366" |
| Compression | 8.0–9.5:1 |
| Advertised power | 100–145 hp |
| Years | 1983–1997 |
| Engine | Displacement | Bore × Stroke | CR | HP |
|---|---|---|---|---|
| 7A-FE | 107.5 ci | 3.189" × 3.3661" | 9.5:1 | — |
| 7A-FE | 107.5 ci | 3.189" × 3.3661" | 9.5:1 | 105–115 |
| 4A | 96.9 ci | 3.189" × 3.0315" | — | — |
| 4A-FE | 96.9 ci | 3.189" × 3.0315" | 9.5:1 | 100–105 |
| 4A-C | 96.9 ci | 3.189" × 3.0315" | 9:1 | — |
| 4A-C / 4A-LC | 96.9 ci | 3.189" × 3.0315" | 9:1 | — |
| 4A-GE | 96.9 ci | 3.189" × 3.0315" | 9.4:1 | 112–115 |
| 4A-LC / 4A-C | 96.9 ci | 3.189" × 3.0315" | 9:1 | — |
| 4A-F | 96.9 ci | 3.189" × 3.0315" | 9.5:1 | — |
| 4A-GZE | 96.9 ci | 3.189" × 3.0315" | 8:1 | 145 |
Every engine here shares a 3.189" bore; displacement varies by stroke alone, which is the signature of a family built on one block with different cranks.
Compression spans 8:1 to 9.5:1, so fuel requirements differ meaningfully between members — worth checking before assuming parts interchange.
The family mixes oversquare and undersquare designs, so members behave quite differently despite sharing a name.
Each engine page carries rod ratio, mean piston speed, bore/stroke character and cylinder head specs where published, and links into the calculators with its dimensions already filled in.