Buick 364ci 8.5:1 Specs
Buick Buick 364ci · 4.125" × 3.4" · 8.5:1 engine specs: 364 ci (6L), 8-cylinder, 4.125" bore x 3.4" stroke, 8.5:1 compression.
Dimensions
| Displacement | 364 ci / 6 L |
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| Bore | 4.125" |
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| Stroke | 3.4" |
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| Cylinders | 8 |
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| Compression ratio | 8.5:1 |
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| Rod length | 6.1" |
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| Rod ratio | 1.794 |
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| Bore/stroke ratio | 1.213 |
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| Piston deck clearance | 0.028" |
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Construction
| Induction | 1-2 |
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| Advertised HP | 210 hp |
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| Years | 1960 |
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What these numbers mean
| Bore/stroke character | 1.213 — oversquare — bore exceeds stroke, which favours higher RPM and larger valves |
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| Mean piston speed at 6,000 RPM | 3,400 ft/min — conservative for a street engine |
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| Rod ratio | 1.794 — long — less side loading on the cylinder wall, favours high RPM |
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| Displacement per cylinder | 45.5 ci |
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| Static compression | 8.5:1 — low by modern standards, generally happy on regular pump fuel |
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Cylinder head
| Intake valve diameter | 1.875" |
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| Exhaust valve diameter | 1.5" |
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| Chamber volume | 123.72 cc |
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| Rocker ratio | 1.6:1 |
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| Lifter type | hydraulic |
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Similar engines
Source: NHRA blueprints — nhra.net blueprints
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