Mercury 410 Specs

Mercury 410 engine specs: 410 ci (6.7L), 8-cylinder, 4.0512" bore x 3.9803" stroke, 10.5:1 compression.

Dimensions

Displacement410 ci / 6.7 L
Bore4.0512"
Stroke3.9803"
Cylinders8
Compression ratio10.5:1
Bore/stroke ratio1.018

Construction

Block materialcast iron
Head materialcast iron
ValvetrainOHV
Fuel typegas
Advertised HP330 hp

What these numbers mean

Bore/stroke character1.018 — square — bore and stroke are within 5%, a balanced compromise
Mean piston speed at 6,000 RPM3,980 ft/min — in the range typical of performance street engines
Displacement per cylinder51.3 ci
Static compression10.5:1 — in the range that usually runs on pump premium

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