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New 5.7L GM Marine Long Block
Model: 881571 This is a brand NEW General Motors marine base engine.  This 5.7L Marine engine is built strictly for marine use on GM production lines.

Our GM Marine long blocks are ideal for replacing an engine when the component parts are still good.  Why replace it if it is not broken?  However, we do recommend replacing warn out components.  All engines, unless clearly stated, are authentic General Motors Marine engines.  Our authentic GM marine engines are built on GM production lines for marine applications.  Don't be mislead by others who can't claim GM authenticity unless you are satisfied with an imitation.

This engine comes equipped with Flywheel set up for Inboard/outboard bottom mount starter application (ring gear towards front of engine)

We Do Not Change the Ring Gear

This Genuine GM engine comes with spark plugs that are used for fuel injected applications.  You must change the plugs to a GM 05614210 (Marine Engine Depot # 479104) if used for a carbureted application. 

This product ships via Freight Shipping

 PricePart Name
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Includes Specifications Related Parts Return Policy  
  • Vortec Engine with high flow cylinder heads
  • circulating water pump
  • 14" flywheel
  • Harmonic balancer
  • Valve covers
  • Spark Plugs

Displacement 350 C.I.D. (5736 CC) / 5.7L
Cylinders 90 Degree V-8 Cylinders
Compression Ratio 9.4:1
Valve config. Overhead Valves (2 valves per cylinder)
Valve lifters Hydraulic lifters
Bore x stroke 4.00" x 3.48" (101.6 x 88.39 mm)
Main bearings Cast iron GM232-M
Ignition Not Included
Flywheel Diameter 14" (Ring gear towards engine)
Firing order 1-8-4-3-6-5-7-2
Oil pan capacity 5.5 Quarts (with filter)
Horsepower 292 H.P. @ 4800 RPM (Carburetor)
Torque 370 lb-ft @ 3200 RPM
Warranty 1 year limited (commercial 90 day)


For items received as described, a refund of the final invoice price (minus shipping and handling charges and a 15% restocking fee) will be issued. Buyer is responsible for return shipping costs and for sufficiently packing and insuring returned items unless otherwise agreed upon. Refunds will not be issued for damaged merchandise. All returns must be made within 15 days of delivery to you. No refunds for electronic parts if box is opened. All returns must have a RMA # and invoice #. 15% restocking fee on any complete engine.

Please email info@marineenginedepot.com for a RMA #

Returns must be shipped to: Marine Engine Depot17506 MPH Industrial ParkPonchatoula, LA 70454

If parts arrive damaged in shipment, it is the customers responsibility to notify the carrier immediately and reject the damaged package. Contact Marine Engine Depot for potential freight damage. A claim will be filed and we will send out the identical part.