GM engineers spent more than 10 million hours creating the technology within the 4.3L V-6 LV1 engine. Every millimeter of the combustion system was carefully designed to support the ideal combination of Direct Injection and Variable Valve Timing, making the most of power, torque, and efficiency.

An aluminum-block casting encapsulates state-of-the-art technology such as Direct Injection, Variable Valve Timing, high-pressure fuel pumps and more.

4.3L LV1 Features & Specifications

4.3L LV1 Tech Specs
Type 4.3L V-6 Small-Block
Displacement 4301cc
Engine Orientation Longitudinal
Compression Ratio 11.0:1
Valve Configuration Overhead valves
Valves per Cylinder 2
Assembly Sites Tonawanda, NY, and Ramos, Mexico
Valve Lifters Hydraulic roller
Firing Order 1 – 6 – 5 – 4 – 3 – 2
Bore x Stroke 99.6 x 92 mm
Fuel System DI
Fuel Type Regular unleaded and E85
Maximum Engine Speed 5800 rpm
Emissions Controls Evaporative emissions, bin 4 emissions, returnless fuel system
Horsepower 285 hp (213 kW) @ 5300 rpm*
Torque 305 lb-ft (413 Nm) @ 3900 rpm*
Block Cast aluminum
Cylinder Head Cast aluminum
Intake Manifold Composite
Exhaust Manifold Cast nodular iron
Main Bearing Caps Powder metal
Crankshaft Forged steel
Camshaft Billet steel
Connecting Rods Powder metal