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    Manufacturer: General Motors

    New 7.4L GM Marine Long Block Engine

    $6,406.00
    This is a Brand New General Motors marine base engine. This 7.4L Marine engine is built strictly for marine use on GM production lines.
    SKU: 881740
    *

    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.

     Includes:

    • Block with all internal components
    • Harmonic balancer
    • Timing chain cover
    • Oil pan
    • Valve cover
    • One piece rear main seal
    Products specifications
    Displacement 454 C.I.D. / 7.4L
    Cylinders 90 Degree V-8 Cylinders
    Compression Ratio 8.6:1
    Valve Configuration Overhead Valves (2 valves per cylinder)
    Valve Lifters Hydraulic Roller
    Firing Order 1 – 8 – 4 – 3 – 6 – 5 – 7 – 2
    Oil Pan Capacity 8 Quarts (with filter)
    Warranty 1 Year Limited (Commercial 90 day)

    Standard Shipments

    We ship orders under 100lbs by UPS or USPS. Expedited shipping services (Next Day Air, Priority Mail, etc.) can be selected during the checkout process. Shipping estimates can be obtained from the shopping cart page before checkout. All expedited orders must be placed before 11:00 A.M. CST to gurantee same day shipping. International orders under 75lbs will ship by UPS. 

     

    Engine/Freight Shipments

    Standard engine shipment quotes are available from the check out page. Customers may contact MED to set up special shipping instructions if necessary. Make sure to check lift gate service or residential delivery if needed. MED will add appropriate charges if services are needed and not billed on original invoice. Engine orders will be processed and shipped within 48 hours if stock is available. Although Marine Engine Depot tries to keep stock of all engines, standard lead time on engines when stock is not available is three weeks.

    All engines are covered by the Marine Power USA warranty policy. Click here for more information on registering your engine for warranty. See below for details.

     Base/ParPac Engine Warranty: 

    The warranty period for a Marine Base or ParPac engine is one (1) year parts and bench labor (Maximum Labor $500.00) from the date of sale. Receipt of a properly completed Warranty Registration / Sea Trial form must be received by Marine Power for any warranty claim to be honored.

     Complete Engine Warranty: 

    The warranty period for a Complete Marine engine is two (2) years from the date of sale. Receipt of a properly completed Warranty Registration / Sea Trial form must be received by Marine Power for any warranty claim to be honored.

     Parts Warranty: 

    The warranty period is one year from your date of purchase. During the warranty period, we will replace, at our option, any new part that fails due to a defect in materials or workmanship under normal use and service after proper installation. Refunds will only be considered if the defective part is returned along with your original sales receipt within 30 days from the original date of purchase.

     Returns:

    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. All returns must be made within 30 days of delivery. No refunds for electronic parts if box is opened. All returns must have an RMA number and Invoice number. There is a 15% restocking fee on the return of any complete engine. All packages must have the RMA number clearly marked on the outside of the box. Any return made without prior authorization or passed the 30-day return period will not be credited and returned to the customer.

    Please email sean@marinepowerusa.com or call (985)-386-2081 to receive an RMA number.

     

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      WARNING: This product can expose you to chemicals including Gasoline engine exhaust (condensates/extracts), 

    which are known to the State of California to cause cancer.  For more information go to www.P65Warnings.ca.gov.

    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.

     Includes:

    • Block with all internal components
    • Harmonic balancer
    • Timing chain cover
    • Oil pan
    • Valve cover
    • One piece rear main seal
    Products specifications
    Displacement 454 C.I.D. / 7.4L
    Cylinders 90 Degree V-8 Cylinders
    Compression Ratio 8.6:1
    Valve Configuration Overhead Valves (2 valves per cylinder)
    Valve Lifters Hydraulic Roller
    Firing Order 1 – 8 – 4 – 3 – 6 – 5 – 7 – 2
    Oil Pan Capacity 8 Quarts (with filter)
    Warranty 1 Year Limited (Commercial 90 day)