Ford 460ci 9.3:1 Specs: 4.362 x 3.85 in, 198-202 hp

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Ford 460ci specs: 460 ci (7.5L) 8-cylinder, 4.362 x 3.85 in (110.8 x 97.8 mm) bore and stroke, 9.3:1 compression. Rated 198-202 hp, 1973. OHV.

The Ford 460ci is oversquare — the 4.362" bore exceeds the 3.85" stroke by 13.3% — a layout that favors airflow and RPM over leverage at the crank. The 3.85" stroke puts mean piston speed at 4,000 ft/min around 6,250 RPM, which is where a production bottom end is generally considered at its limit. A rod ratio of 1.716 is in the range most production engines fall in. Each of the 8 cylinders displaces 57.5 ci (942 cc).

9.3:1 on iron heads is low by modern standards and generally happy on regular pump fuel.

It is one of 9 engines in the Ford 460ci family, all of them 460 ci — the differences between them are in compression, heads and rating, not displacement. 2 factory variants share these dimensions, rated from 198 to 202 hp in 1973.

Dimensions

Displacement460 ci / 7.5 L
Bore4.362"
Stroke3.85"
Cylinders8
ConfigurationV8
Compression ratio9.3:1
Rod length6.605"
Rod ratio1.716
Bore/stroke ratio1.133
Piston deck clearance0.009"

Construction

Block materialcast iron
Head materialcast iron
ValvetrainOHV
Fuel typegas
Advertised HP198–202 hp
Years1973

What these numbers mean

Bore/stroke character1.133 — oversquare — bore exceeds stroke, which favours higher RPM and larger valves
Mean piston speed at 6,000 RPM3,850 ft/min — in the range typical of performance street engines
Rod ratio1.716 — moderate — the range most production V8s fall in
Displacement per cylinder57.5 ci
Static compression9.3:1 — low by modern standards, generally happy on regular pump fuel

Cylinder head

Intake valve diameter2.09"
Exhaust valve diameter1.661"

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Variants sharing these dimensions (2)

These records share identical bore, stroke, displacement and compression. They differ by model year and factory power rating.

YearAdvertised HPCode
1973198 hp—
1973202 hp—

Similar engines

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