Chevrolet LT6 Specs

Chevrolet LT6 engine specs: 333 ci (5.5L), 8-cylinder, 4.1043" bore x 3.1496" stroke, 12.5:1 compression.

Dimensions

Displacement	333 ci / 5.5 L
Bore	4.1043"
Stroke	3.1496"
Cylinders	8
Compression ratio	12.5:1
Bore/stroke ratio	1.303

Construction

Block material	aluminum
Head material	aluminum
Valvetrain	DOHC
Fuel type	gas
Advertised HP	670 hp

What these numbers mean

Bore/stroke character	1.303 — oversquare — bore exceeds stroke, which favours higher RPM and larger valves
Mean piston speed at 6,000 RPM	3,150 ft/min — conservative for a street engine
Displacement per cylinder	41.6 ci
Static compression	12.5:1 — high enough that pump premium or better is normally required

Run the numbers for this engine

Each link opens the calculator with this engine's specs already filled in.

• Displacement calculator
• Compression ratio calculator
• Piston ring gap calculator
• Piston speed calculator
• Carburetor CFM calculator

Vehicles (1)

• Chevrolet Corvette C8 Z06

Similar engines

• Chevrolet L83 — 325 ci
• Chevrolet Gen V LT · 4.065" × 3.622" · 11.5:1 — 376 ci
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• Chevrolet L8T — 400 ci
• Chevrolet Chevrolet 327ci · 4.065" × 3.150" · 11.15:1 — 327 ci
• Chevrolet Chevrolet 327ci · 4.065" × 3.150" · 12.5:1 — 327 ci
• Mercedes-Benz M113 E55 — 332.5 ci
• Mercedes-Benz M113 E55 ML — 332.5 ci

← All Gen V LT engines