Chevrolet Chevr 1988 262 140HP engine specs: 262 ci (4.3L), 6-cylinder, 4.001" bore x 3.48" stroke, 10.9:1 compression.
| Displacement | 262 ci / 4.3 L |
|---|---|
| Bore | 4.001" |
| Stroke | 3.48" |
| Cylinders | 6 |
| Configuration | V8 |
| Compression ratio | 10.9:1 |
| Rod length | 5.7" |
| Rod ratio | 1.638 |
| Bore/stroke ratio | 1.15 |
| Piston deck clearance | 0.016" |
| Block material | cast iron |
|---|---|
| Head material | cast iron |
| Valvetrain | OHV |
| Fuel type | gas |
| Advertised HP | 140 hp |
| Years | 1988 |
| Bore/stroke character | 1.150 — oversquare — bore exceeds stroke, which favours higher RPM and larger valves |
|---|---|
| Mean piston speed at 6,000 RPM | 3,480 ft/min — conservative for a street engine |
| Rod ratio | 1.638 — moderate — the range most production V8s fall in |
| Displacement per cylinder | 43.7 ci |
| Static compression | 10.9:1 — in the range that usually runs on pump premium |
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Source: NHRA blueprints — nhra.net blueprints