Mercedes-Benz M156 E63 Specs

Mercedes-Benz M156 E63 engine specs: 378.8 ci (6.2L), 8-cylinder, 4.0236" bore x 3.7244" stroke, 11.3:1 compression.

Dimensions

Displacement378.8 ci / 6.2 L
Bore4.0236"
Stroke3.7244"
Cylinders8
Compression ratio11.3:1
Bore/stroke ratio1.08

Construction

Block materialaluminum
Head materialaluminum
ValvetrainDOHC
Fuel typegas
Advertised HP451–510 hp

What these numbers mean

Bore/stroke character1.080 — oversquare — bore exceeds stroke, which favours higher RPM and larger valves
Mean piston speed at 6,000 RPM3,724 ft/min — in the range typical of performance street engines
Displacement per cylinder47.4 ci
Static compression11.3:1 — high enough that pump premium or better is normally required

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Variants sharing these dimensions (5)

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

YearAdvertised HPCode
451 hpM156 E63
480 hpM156 E63
487 hpM156 E63
500 hpM156 E63
510 hpM156 E63

Vehicles (13)

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