Buick 300 Specs

Buick 300 engine specs: 300 ci (4.9L), 8-cylinder, 3.7992" bore x 3.311" stroke, 9:1 compression.

Dimensions

Displacement	300 ci / 4.9 L
Bore	3.7992"
Stroke	3.311"
Cylinders	8
Compression ratio	9:1
Bore/stroke ratio	1.147

Construction

Block material	cast iron
Head material	aluminum
Valvetrain	OHV
Fuel type	gas
Advertised HP	210 hp

What these numbers mean

Bore/stroke character	1.147 — oversquare — bore exceeds stroke, which favours higher RPM and larger valves
Mean piston speed at 6,000 RPM	3,311 ft/min — conservative for a street engine
Displacement per cylinder	37.5 ci
Static compression	9:1 — low by modern standards, generally happy on regular pump fuel

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 (5)

• Buick Skylark
• Buick Special
• Buick LeSabre
• LeSabre
• Skylark

Similar engines

• Buick 340 — 340 ci
• Buick 350 — 350 ci
• Buick Buick 300ci · 3.75" × 3.4" · 9:1 — 300 ci
• Buick Buick 300ci · 3.75" × 3.4" · 11:1 — 300 ci
• Buick Buick 300ci · 3.75" × 3.4" · 10.25:1 — 300 ci
• Buick Buick 301ci · 4.002" × 3.010" · 8.741:1 — 301 ci
• Cadillac 49 V8 — 300 ci
• GMC 300 — 300 ci

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