Buick LY7 Specs

Buick LY7 engine specs: 217 ci (3.6L), 6-cylinder, 3.7008" bore x 3.3701" stroke, 10.2:1 compression.

Dimensions

Displacement	217 ci / 3.6 L
Bore	3.7008"
Stroke	3.3701"
Cylinders	6
Compression ratio	10.2:1
Bore/stroke ratio	1.098

Construction

Block material	aluminum
Head material	aluminum
Valvetrain	DOHC
Fuel type	gas
Advertised HP	252 hp

What these numbers mean

Bore/stroke character	1.098 — oversquare — bore exceeds stroke, which favours higher RPM and larger valves
Mean piston speed at 6,000 RPM	3,370 ft/min — conservative for a street engine
Displacement per cylinder	36.2 ci
Static compression	10.2:1 — 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 (6)

• Buick LaCrosse
• Buick Enclave
• Buick Rendezvous
• LaCrosse
• Enclave
• Cadillac CTS

Similar engines

• Buick GM High Feature V6 · 3.701" × 3.370" · 11.3:1 — 217 ci
• Buick LFX — 217 ci
• Buick 36 V6 LGX — 217 ci
• Buick LY7 — 217 ci
• Buick LLT — 217 ci
• Buick LFX — 217 ci
• Buick LGX — 217 ci
• Cadillac LF4 — 217 ci

← All GM High Feature V6 engines