Cadillac 425 V8 Specs

Cadillac 425 V8 engine specs: 425 ci (7L), 8-cylinder, 4.0827" bore x 4.0591" stroke, 8.2:1 compression.

Dimensions

Displacement425 ci / 7 L
Bore4.0827"
Stroke4.0591"
Cylinders8
Compression ratio8.2:1
Bore/stroke ratio1.006

Construction

Block materialcast iron
Head materialcast iron
ValvetrainOHV
Fuel typegas
Advertised HP180 hp

What these numbers mean

Bore/stroke character1.006 — square — bore and stroke are within 5%, a balanced compromise
Mean piston speed at 6,000 RPM4,059 ft/min — in the range typical of performance street engines
Displacement per cylinder53.1 ci
Static compression8.2:1 — low by modern standards, generally happy on regular pump fuel

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