Buick 1985 262 85HP Specs
Buick 1985 262 85HP engine specs: 262 ci (4.3L), 6-cylinder, 4.057" bore x 3.385" stroke, 23.5:1 compression.
Dimensions
| Displacement | 262 ci / 4.3 L |
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| Bore | 4.057" |
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| Stroke | 3.385" |
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| Cylinders | 6 |
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| Configuration | V6 |
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| Compression ratio | 23.5:1 |
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| Rod length | 5.885" |
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| Rod ratio | 1.739 |
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| Bore/stroke ratio | 1.199 |
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| Piston deck clearance | 0.046" |
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Construction
| Block material | cast iron |
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| Head material | cast iron |
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| Valvetrain | OHV |
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| Fuel type | gas |
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| Advertised HP | 85 hp |
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| Years | 1985 |
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What these numbers mean
| Bore/stroke character | 1.199 — oversquare — bore exceeds stroke, which favours higher RPM and larger valves |
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| Mean piston speed at 6,000 RPM | 3,385 ft/min — conservative for a street engine |
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| Rod ratio | 1.739 — moderate — the range most production V8s fall in |
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| Displacement per cylinder | 43.7 ci |
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| Static compression | 23.5:1 — high enough that pump premium or better is normally required |
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Cylinder head
| Intake valve diameter | 1.945" |
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| Exhaust valve diameter | 1.505" |
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Similar engines
Source: NHRA blueprints — nhra.net blueprints
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