Water pump not included

5.7L V-8, L31-MARINE 

REFINED TORQUE PERFORMANCE  

CYLINDERS: 8

FUEL TYPE: REGULAR UNLEADED GASOLINE (87 OCTANE)

5.7L V-8, L31-Marine Features & Specifications  

GM Powered Solutions offers our 5.7L V-8 engine with its cast-iron block and cylinder head to help deliver excellent performance and durability. GM’s Marine version of the L31 features a camshaft designed to help optimize engine torque performance while under a constant load. 

Type:

5.7L V-8 Gen 1e Small Block 

Displacement:

5736 CC (346ci) 

Engine Orientation:

Longitudinal 

Compression Ratio:

9.4:1 

Valve Configuration:

Overhead Valves 

Valves per Cylinder:

Two 

Assembly Site:

Springfield, MO, of Globally Sourced Parts 

Valve Lifters:

Hydraulic Roller 

Firing Order:

1–8–4–3–6–5–7–2

Bore x Stroke:

101.6 x 88.39 mm 

Fuel System:

None

Fuel Type: 

Regular Unleaded Gasoline (87 Octane) 

Horsepower: 

Actual power levels may vary depending on OEM calibration and application. 

Torque: 

Actual power levels may vary depending on OEM calibration and application.

Shipping Weight:

432 lb. (196 kg) 

Emissions Control: 

Positive Crankcase Ventilation 

Block: 

Cast Iron GM232-M 

Cylinder Head:

Cast Iron 

Intake Manifold: 

None

Exhaust Manifold: 

None

Main Bearing Caps: 

Cast Iron GM232-M 

Crankshaft: 

Forged Steel 

Camshaft: 

5150 Steel

Connecting Rod: 

Forged Steel