Buick 430 Specs

Buick 430 engine specs: 430 ci (7L), 8-cylinder, 4.2992" bore x 3.6299" stroke, 10.25:1 compression.

Dimensions

Displacement	430 ci / 7 L
Bore	4.2992"
Stroke	3.6299"
Cylinders	8
Compression ratio	10.25:1
Bore/stroke ratio	1.184

Construction

Block material	cast iron
Head material	cast iron
Valvetrain	OHV
Fuel type	gas
Advertised HP	360 hp

What these numbers mean

Bore/stroke character	1.184 — oversquare — bore exceeds stroke, which favours higher RPM and larger valves
Mean piston speed at 6,000 RPM	3,630 ft/min — in the range typical of performance street engines
Displacement per cylinder	53.8 ci
Static compression	10.25:1 — 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 (8)

• Buick Electra
• Buick Wildcat
• Buick Riviera
• Buick Electra 225
• Riviera
• Electra
• Wildcat
• Electra 225

Similar engines

• Buick 455 — 455 ci
• Buick 400 — 400 ci
• Buick Buick 430ci · 4.185" × 3.9" · 10.25:1 — 430 ci
• Buick 425 — 425 ci
• Buick Buick 425ci · 4.313" × 3.64" · 10.25:1 — 425 ci
• Buick 455 — 455 ci
• GMC 430 — 430 ci
• Lincoln 430 MEL V8 — 430 ci

← All Buick Big-Block V8 engines