Mark 4 454ci marine engine (two piece rear main seal, oval port heads, flat tappet cam, mechanical fuel pump). ONE YEAR unlimited hours warranty. $500 core charge. This motor has been professionally remanufactured to meet or exceed GM OEM marine engine stock specifications. This 454ci marine engine is rated at 310-330 hp at the crank (depending on intake, carburation, exhaust manifolds, etc). This 454ci engine will work in all pre-1990 454ci applications with no modifications.
This 454ci marine engine comes equipped with the following:
454ci Mark 4 GM marine engine (standard rotation)Corrosion resistant black urethane paintcylinder heads with heat crossover, engine block and all internal componentsFlat tappet cam 8-quart marine oil pan Fel-Pro marine head gaskets Harmonic balancer, timing cover and circulation pumpOne-year (parts & labor) Warranty
Will work in pre-1990 454ci applications with no modificationsOpposite rotation available for an additional $800 (flat tappet cam)
Email sales@michiganmotorz.com or call (248) 524-9600 to place your order, or for a shipping quote.
We ship parts and engines worldwide! Parts orders placed before 12:00pm EST will normally be shipped same day (if the item is in stock). If you need your parts ASAP, UPS next day air, second day air, etc., are also available (Deadline is 3pm Eastern Time). Engine orders will be processed and shipped within 24-48 hours after payment-in-full is received. For special engine orders, shipping time is based on current stock and build time.
Items under 75 pounds are sent via UPS in continental USA. Items sent overseas are sent via USPS or UPS Worldwide Expedited, or air freight (depending on item weight). UPS cannot ship to PO Boxes.
Engine Shipping
For a shipping quote, please email sales@michiganmotorz.com or call (248) 524-9600 with your shipping address and contact information. We use different freight carriers to find you the lowest price AND safest delivery. Some of the freight carriers we use are: Con-Way Freight, Estes Express, Pilot Air, USF Holland, Forward Air, Roadway Express, Old Dominion, Overnight express, Watkins, and Dayton Freight. Engines can be picked up at a local shipping terminal or dropped off at your location* (*certain restrictions apply). Engines are packed in specially designed crates made for that engine.
All oil & lubricating fluids are drained before they are sent out (this is required by our freight carriers). All engines & parts are packed by our shipping department. Engines are then inspected by our shipping manager before they are loaded onto a freight carrier.
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 call or email for a RMA #.
Returns must be shipped to:
Michigan Motorz
1800 Austin Drive
Troy MI, 48083
If parts arrive damaged in shipment, it is the customers responsibility to notify the carrier immediately and reject the damaged package. Contact Michigan Motorz of the potential damage. A claim will be filed and we will send out the identical part. If parts are damaged in shipment and the customer does not notice damage, please call Michigan Motorz LLC.
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