GMC LK5 Specs

GMC LK5 engine specs: 169 ci (2.8L), 4-cylinder, 3.6614" bore x 4.0157" stroke, 10.1:1 compression.

Dimensions

Displacement	169 ci / 2.8 L
Bore	3.6614"
Stroke	4.0157"
Cylinders	4
Compression ratio	10.1:1
Bore/stroke ratio	0.912

Construction

Block material	aluminum
Head material	aluminum
Valvetrain	DOHC
Fuel type	gas
Advertised HP	175 hp

What these numbers mean

Bore/stroke character	0.912 — undersquare — stroke exceeds bore, which favours low-end torque
Mean piston speed at 6,000 RPM	4,016 ft/min — in the range typical of performance street engines
Displacement per cylinder	42.3 ci
Static compression	10.1:1 — 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 (3)

• GMC Canyon
• Chevrolet Colorado
• Isuzu i-280

Similar engines

• GMC LCV — 169 ci
• GMC L3B — 166 ci
• GMC LLV — 177 ci
• GMC 3.0L Duramax I6 Diesel · 3.307" × 3.543" · 15:1 — 182 ci
• GMC High Feature V6 · 3.504" × 3.161" · 11.7:1 — 182 ci
• GMC Ecotec I4 · 3.465" × 3.858" · 10.4:1 — 145 ci
• Chevrolet LWQ — 170 ci
• Ford 1974 170 105HP — 170 ci

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