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Mercruiser 5.0L 305 V8 Marine Base Engine-Sale
Product Code: Mercruiser 5.0L 305 V8
Availability: 10
Availability: 10
Price: $2,200.00
Ex Tax: $2,200.00
Ex Tax: $2,200.00
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New 5.0L, 305 CID Marine Base Engine. Directly replaces years 1997-up Mercruiser, Volvo Penta, Marine Power, Indmar Engines.
100% factory new 5.0L, 305 CID marine engine. Used in marine and industrial engine applications between the years 1997-present. This will replace 5.7L GM engines used in Mercruiser, Volvo Penta, Marine Power, and other marine and industrial engine applications. This part number directly replaces those carbureted, TBI, and MPI engines used between 1997-present.
This base engine includes:
assembled longblock (engine block, cylinder head, all internals)
oil pan
valve covers
aluminum timing cover
harmonic balancer
When calling, reference part number: ENG-5144NMSR
About New Marine Engines 4 Less Units
Beginning in 2015, GM has began to discontinue many of their marine engines. This includes the 3.0L and 4.3L in 2015, the 5.0L in 2016, and the 7.4L and 8.2L in 2022. To date (July 2023), GM only produces the Vortec 5.7L marine engine. Because of this, we began producing our own new units in 2021. These new units use DART’s performance engine blocks and are machined, assembled and tested in our facility. They are built to GM factory specifications and there will be no issues to use these units in place of GM MPI or TBI units.
Similarly, in 2023 Mercruiser’s “Quicksilver” branded engines will begin to use new DART blocks as well, as GM has discontinued and stopped providing new engines to Mercruiser.
The benefit of using our in house produced units using DART engine blocks include:
Priority main oiling system feeds main bearings first. See Figure 1.
Siamese cylinder bores with extra thick walls resist cracking and improve ring seal for more power (minimum .275” thick with 4.185” bore).
Open lifter valley improves oil return to pan.
Blind head bolt holes don’t go through to water jacket.
Billet steel 4-bolt main bearing caps on all 5 mains.
New 5.0L, 305 CID Marine Base Engine. Directly replaces years 1997-up Mercruiser, Volvo Penta,Marine Power, Indmar Engines.
100% factory new 5.0L, 305 CID marine engine. Used in marine and industrial engine applications between the years 1997-present. This will replace 5.7L GM engines used in Mercruiser, Volvo Penta, Marine Power, and other marine and industrial engine applications.
This part number directly replaces those carbureted, TBI, and MPI engines used between 1997-present.
This base engine includes:
assembled longblock (engine block, cylinder head, all internals)
oil pan
valve covers
aluminum timing cover
harmonic balancer
When calling, reference part number: ENG-5144NMSR
Please note the lead time specified in in "shipping and payments" tab under "handling time". Message to clarify, if necessary.
About New Marine Engines 4 Less Units
Beginning in 2015, GM has began to discontinue many of their marine engines. This includes the 3.0L and 4.3L in 2015, the 5.0L in 2016, and the 7.4L and 8.2L in 2022. To date (July 2023), GM only produces the Vortec 5.7L marine engine. Because of this, we began producing our own new units in 2021. These new units use DART’s performance engine blocks and are machined, assembled and tested in our facility. They are built to GM factory specifications and there will be no issues to use these units in place of GM MPI or TBI units.
Similarly, in 2023 Mercruiser’s “Quicksilver” branded engines will begin to use new DART blocks as well, as GM has discontinued and stopped providing new engines to Mercruiser.
The benefit of using our in house produced units using DART engine blocks include:
Priority main oiling system feeds main bearings first. See Figure 1.
Siamese cylinder bores with extra thick walls resist cracking and improve ring seal for more power (minimum .275” thick with 4.185” bore).
Open lifter valley improves oil return to pan.
Blind head bolt holes don’t go through to water jacket.
Billet steel 4-bolt main bearing caps on all 5 mains.
Figure 1: Priority main oiling primes the main bearings first and then to the lifters and top end instead of top down oil priming in OEM blocks allowing for peak performance at high temperatures.
Casting Number Information:
Cylinder Block Casting No’s: 878
Cylinder Head Casting No’s:059, 520
Cross reference guide:
Mercruiser 8M0088396
Volvo Penta 5.0GL-A to 5.0OSI-GF
Displacement: 305 CID/ 5.0L
Cylinders: 90 Degree V8 Cylinder
Compression Ratio: 9.4:1 (High Flow Vortec Head)
Valve Configuration: Overhead valves (2 valves per cylinder)
Valve Lifters: Hydraulic Roller
Bore x Stroke: 3.737” x 3.48” (94.92 x 88.39 mm)
Main Bearings: 2 Bolt Cast Iron
Firing Order: 1 – 8 – 4 – 3 – 6 – 5 – 7 – 2
Oil Pan Capacity: 5.5 Quarts (W/O Filter)
Oil Type: SAE 25W40 Pennzoil Marine
Paint Protectant: High Gloss Black / Superior Corrosion Res.
Horsepower: 260 H.P. @ 4800 RPM (4BBL Carburetor)
Torque: 355 lb-ft @ 3600 RPM
Warranty: 1 Year Limited
Brand New Mercruiser 5.0L 305 V8 Marine Base Engine
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