Chevrolet 164ci 8.25:1 Specs
Chevrolet Chevrolet 164ci · 3.438" × 2.94" · 8.25:1 engine specs: 164 ci (2.7L), 6-cylinder, 3.438" bore x 2.94" stroke, 8.25:1 compression.
Dimensions
| Displacement | 164 ci / 2.7 L |
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| Bore | 3.438" |
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| Stroke | 2.94" |
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| Cylinders | 6 |
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| Compression ratio | 8.25:1 |
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| Rod length | 4.72" |
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| Rod ratio | 1.605 |
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| Bore/stroke ratio | 1.169 |
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| Piston deck clearance | 0.0005" |
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Construction
| Induction | 2-1 |
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| Advertised HP | 95–180 hp |
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| Years | 1964–1969 |
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What these numbers mean
| Bore/stroke character | 1.169 — oversquare — bore exceeds stroke, which favours higher RPM and larger valves |
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| Mean piston speed at 6,000 RPM | 2,940 ft/min — conservative for a street engine |
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| Rod ratio | 1.605 — moderate — the range most production V8s fall in |
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| Displacement per cylinder | 27.3 ci |
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| Static compression | 8.25:1 — low by modern standards, generally happy on regular pump fuel |
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Cylinder head
| Intake valve diameter | 1.345" |
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| Exhaust valve diameter | 1.245" |
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| Chamber volume | 58.4 cc |
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| Rocker ratio | 1.5:1 |
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| Lifter type | hydraulic |
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Variants sharing these dimensions (9)
These records share identical bore, stroke, displacement and compression. They differ by model year and factory power rating.
| Year | Advertised HP | Code |
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| 1964 | 95 hp | — |
| 1964 | 150 hp | — |
| 1965 | 95 hp | — |
| 1965 | 180 hp | — |
| 1966 | 95 hp | — |
| 1966 | 180 hp | — |
| 1967 | 95 hp | — |
| 1968 | 95 hp | — |
| 1969 | 95 hp | — |
Similar engines
Source: NHRA blueprints — nhra.net blueprints
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