Ford 1973 156 107HP Specs
Ford 1973 156 107HP engine specs: 156 ci (2.6L), 6-cylinder, 3.554" bore x 2.63" stroke, 9.8:1 compression.
Dimensions
| Displacement | 156 ci / 2.6 L |
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| Bore | 3.554" |
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| Stroke | 2.63" |
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| Cylinders | 6 |
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| Configuration | I6 |
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| Compression ratio | 9.8:1 |
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| Rod length | 5.14" |
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| Rod ratio | 1.954 |
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| Bore/stroke ratio | 1.351 |
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| Piston deck clearance | 0.028" |
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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 | 107 hp |
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| Years | 1973 |
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What these numbers mean
| Bore/stroke character | 1.351 — oversquare — bore exceeds stroke, which favours higher RPM and larger valves |
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| Mean piston speed at 6,000 RPM | 2,630 ft/min — conservative for a street engine |
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| Rod ratio | 1.954 — long — less side loading on the cylinder wall, favours high RPM |
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| Displacement per cylinder | 26.0 ci |
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| Static compression | 9.8:1 — in the range that usually runs on pump premium |
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Cylinder head
| Intake valve diameter | 1.57" |
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| Exhaust valve diameter | 1.27" |
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Similar engines
Source: NHRA blueprints — nhra.net blueprints
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