Oldsmobile Oldsm 1976 250 105HP Specs
Oldsmobile Oldsm 1976 250 105HP engine specs: 250 ci (4.1L), 6-cylinder, 3.875" bore x 3.53" stroke, 9.211:1 compression.
Dimensions
| Displacement | 250 ci / 4.1 L |
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| Bore | 3.875" |
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| Stroke | 3.53" |
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| Cylinders | 6 |
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| Configuration | V6 |
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| Compression ratio | 9.211:1 |
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| Rod length | 5.7" |
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| Rod ratio | 1.615 |
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| Bore/stroke ratio | 1.098 |
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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 | 105 hp |
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| Years | 1976 |
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What these numbers mean
| Bore/stroke character | 1.098 — oversquare — bore exceeds stroke, which favours higher RPM and larger valves |
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| Mean piston speed at 6,000 RPM | 3,530 ft/min — in the range typical of performance street engines |
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| Rod ratio | 1.615 — moderate — the range most production V8s fall in |
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| Displacement per cylinder | 41.7 ci |
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| Static compression | 9.211:1 — low by modern standards, generally happy on regular pump fuel |
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Cylinder head
| Intake valve diameter | 1.725" |
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| Exhaust valve diameter | 1.505" |
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