Buick 455 Specs

Buick 455 engine specs: 455 ci (7.5L), 8-cylinder, 4.2992" bore x 4" stroke, 10:1 compression.

Dimensions

Displacement	455 ci / 7.5 L
Bore	4.2992"
Stroke	4"
Cylinders	8
Compression ratio	10:1
Bore/stroke ratio	1.075

Construction

Block material	cast iron
Head material	cast iron
Valvetrain	OHV
Fuel type	gas
Advertised HP	370 hp

What these numbers mean

Bore/stroke character	1.075 — oversquare — bore exceeds stroke, which favours higher RPM and larger valves
Mean piston speed at 6,000 RPM	4,000 ft/min — in the range typical of performance street engines
Displacement per cylinder	56.9 ci
Static compression	10:1 — in the range that usually runs on pump premium

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 (9)

• Buick GS 455
• Buick Electra
• Buick Riviera
• Buick GSX
• Buick Centurion
• Buick Electra 225
• GS 455
• Riviera
• Centurion

Similar engines

• Buick 430 — 430 ci
• Buick 400 — 400 ci
• Buick 455 — 455 ci
• Buick Buick 455ci · 4.313" × 3.9" · 10:1 — 455 ci
• Buick Buick 455ci · 4.313" × 3.9" · 10.5:1 — 455 ci
• Buick Buick 455ci · 4.313" × 3.9" · 10.28:1 — 455 ci
• GMC 455 — 455 ci
• Oldsmobile Oldsmobile 455ci · 4.126" × 4.250" · 9.161:1 — 455 ci

← All Buick Big-Block V8 engines