Ford 1974 170 105HP Specs
Ford 1974 170 105HP engine specs: 170 ci (2.8L), 6-cylinder, 3.5" bore x 2.94" stroke, 9.872:1 compression.
Dimensions
| Displacement | 170 ci / 2.8 L |
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| Bore | 3.5" |
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| Stroke | 2.94" |
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| Cylinders | 6 |
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| Configuration | I6 |
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| Compression ratio | 9.872:1 |
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| Rod length | 4.715" |
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| Rod ratio | 1.604 |
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| Bore/stroke ratio | 1.19 |
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| Piston deck clearance | 0.025" |
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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 | 1974 |
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What these numbers mean
| Bore/stroke character | 1.190 — 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 | 1.604 — moderate — the range most production V8s fall in |
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| Displacement per cylinder | 28.3 ci |
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| Static compression | 9.872:1 — in the range that usually runs on pump premium |
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Cylinder head
| Intake valve diameter | 1.577" |
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| Exhaust valve diameter | 1.276" |
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| Chamber volume | 48.32 cc |
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| Rocker ratio | 1.5:1 |
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| Lifter type | hydraulic |
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Similar engines
Source: NHRA blueprints — nhra.net blueprints
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