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This reconditioned GM 5.7L (350cid) Vortec marine engine is a direct replacement for 1996 and newer engines with 8 intake manifold bolts and standard rotation. Oil pan, rocker cover and timing cover are optional $$$ An additional fee of $1000 may apply for engine molding. 8 intake manifold bolts, 1 rear oil seal, electric pump This engine block is entirely machined on our CNC machine. It features a machined crankshaft bearing and a bored cylinder with a cutting edge bearing. The block is assembled with brass plugs and has undergone a pressure test.
$3,700.00 - $4,700.00
This reconditioned GM 5.7L (350cid) Vortec marine engine is a direct replacement for 1996 and newer engines with 8 intake manifold bolts and standard rotation. Oil pan, rocker cover and timing cover are optional $$$ An additional fee of $1000 may apply for engine molding.
$5,200.00 - $6,100.00
This reconditioned GM 5.7L (350cid) Vortec marine engine is a direct replacement for 1996 and newer engines with 8 intake manifold bolts and standard rotation. Oil pan, rocker cover and timing cover are optional $$$ An additional fee of $1000 may apply for engine molding.
$4,900.00 - $5,650.00
This reconditioned GM 5.7L (350cid) Vortec marine engine is a direct replacement for 1996 and newer engines with 8 intake manifold bolts and standard rotation. Oil pan, rocker cover and timing cover are optional $$$ An additional fee of $1000 may apply for engine molding.
$4,900.00 - $5,650.00
This reconditioned GM 5.7L (350cid) Vortec marine engine is a direct replacement for 1996 and newer engines with 8 intake manifold bolts and standard rotation. Oil pan, rocker cover and timing cover are optional $$$ An additional fee of $1000 may apply for engine molding.
$5,200.00 - $6,100.00
This reconditioned GM 5.7L (350cid) Vortec marine engine is a direct replacement for 1996 and newer engines with 8 intake manifold bolts and standard rotation. Oil pan, rocker cover and timing cover are optional $$$ An additional fee of $1000 may apply for engine molding.
$3,500.00 - $4,200.00
This reconditioned GM 5.7L (350cid) Vortec marine engine is a direct replacement for 1996 and newer engines with 8 intake manifold bolts and standard rotation. Oil pan, rocker cover and timing cover are optional $$$ An additional fee of $1000 may apply for engine molding.
$3,800.00 - $4,700.00
This reconditioned GM 5.7L (350cid) Vortec marine engine is a direct replacement for 1996 and newer engines with 8 intake manifold bolts and standard rotation. Oil pan, rocker cover and timing cover are optional $$$ An additional fee of $1000 may apply for engine molding.
$4,100.00 - $5,100.00
This reconditioned GM 5.7L (350cid) Vortec marine engine is a direct replacement for 1996 and newer engines with 8 intake manifold bolts and standard rotation. Oil pan, rocker cover and timing cover are optional $$$ An additional fee of $1000 may apply for engine molding.
$5,800.00 - $7,800.00
This reconditioned GM 5.7L (350cid) Vortec marine engine is a direct replacement for 1996 and newer engines with 8 intake manifold bolts and standard rotation. Oil pan, rocker cover and timing cover are optional $$$ An additional fee of $1000 may apply for engine molding.
$5,700.00 - $7,200.00
This reconditioned GM 7.4L (454cid) marine engine is a direct replacement for engines (Gen IV block) from 1970 to 1991 with 2-piece rear oil seal and standard rotation. Oil pan, rocker cover and timing cover are optional $$$ An additional fee of $2500 may apply for engine molding. Gen IV block, 2-piece rear oil seal, round intake port, flat tappet, standard rotation, forged piston, rectangular intake port This engine block is entirely machined on our CNC machine. It features a machined crankshaft bearing and a bored cylinder with a cutting edge bearing. The block is assembled with brass plugs and has undergone a pressure test.
$6,200.00 - $8,700.00
This reconditioned GM 7.4L (454cid) marine engine is a direct replacement for engines (Gen IV block) from 1970 to 1990 with 2-piece rear oil seal and standard rotation. Oil pan, rocker cover and timing cover are optional $$$ An additional fee of $1000 may apply for engine molding. Gen IV block, 2-piece rear oil seal, round intake port, flat tappet, standard rotation, 2 to 4 bolt main, flat cam, round intake port This engine block is entirely machined on our CNC machine. It features a machined crankshaft bearing and a bored cylinder with a cutting edge bearing. The block is assembled with brass plugs and has undergone a pressure test.
$4,700.00 - $4,800.00
This reconditioned GM 7.4L (454cid) marine engine is a direct replacement for engines (Gen V block) from 1991 to 1996 with 1-piece rear oil seal and standard rotation. Oil pan, rocker cover and timing cover are optional $$$ An additional fee for engine molding may apply: $1200 Gen V block, 1-piece rear oil seal, oval intake port, flat tappet, standard rotation, flat cam, 10-bolt timing cover This engine block is entirely machined on our CNC machine. It features a machined crankshaft bearing and a bored cylinder with a cutting edge bearing. The block is assembled with brass plugs and has undergone a pressure test.
$5,100.00 - $6,300.00
This reconditioned GM 7.4L (454cid) marine engine is a direct replacement for engines (Gen V block) from 1991 to 1996 with 1-piece rear oil seal and standard rotation. Oil pan, rocker cover and timing cover are optional $$$ An additional fee of $3000 may apply for engine molding. Gen V block, 1-piece rear oil seal, rectangular intake port, forged piston, standard rotation, cam roller, 10-bolt timing cover This engine block is entirely machined on our CNC machine. It features a machined crankshaft bearing and a bored cylinder with a cutting edge bearing. The block is assembled with brass plugs and has undergone a pressure test.
$7,200.00 - $10,200.00
This reconditioned GM 7.4L (454cid) marine engine is a direct replacement for engines (Gen V block) from 1991 to 1996 with 1-piece rear oil seal and standard rotation. Oil pan, rocker cover and timing cover are optional $$$ An additional fee of $1500 may apply for engine molding. Gen V block, 1-piece rear oil seal, oval intake port, standard rotation, cam roller, 10-bolt timing cover This engine block is entirely machined on our CNC machine. It features a machined crankshaft bearing and a bored cylinder with a cutting edge bearing. The block is assembled with brass plugs and has undergone a pressure test.
$5,700.00 - $7,200.00
This reconditioned GM 7.4L (454cid) marine engine is a direct replacement for engines (Gen V block) from 1996 to 2006 with 1-piece rear oil seal and standard rotation. Oil pan, rocker cover and timing cover are optional $$$ An additional fee of $1500 may apply for engine molding. Gen VI block, 1-piece rear oil seal, oval intake port, standard rotation, cam roller, 6-bolt timing cover This engine block is entirely machined on our CNC machine. It features a machined crankshaft bearing and a bored cylinder with a cutting edge bearing. The block is assembled with brass plugs and has undergone a pressure test.
$6,150.00 - $7,650.00
This reconditioned GM 7.4L (454cid) marine engine is a direct replacement for engines (Gen V block) from 1996 to 2006 with 1-piece rear oil seal and standard rotation. Oil pan, rocker cover and timing cover are optional $$$ An additional fee of $3000 may apply for engine molding. Gen VI block, 1-piece rear oil seal, rectangular intake port, standard rotation, cam roller, 6-bolt timing cover, forged piston This engine block is entirely machined on our CNC machine. It features a machined crankshaft bearing and a bored cylinder with a cutting edge bearing. The block is assembled with brass plugs and has undergone a pressure test.
$7,650.00 - $10,650.00
8.1 L marine engine (standard or high output) (one-piece rear main seal, roller cam and roller tappets). This engine has been professionally remanufactured to meet or exceeds the specifications of GM OEM marine engine stock. Develops between 370 and 375 hp for the standard HP or between 420 and 425 hp for the high-performance version. This 8.1 L long block will NOT work as a replacement for a 7.4 L block. This 8.1L marine engine (standard or high output) is equipped with the following features: GM 8.1L marine engine (standard rotation) Standard (370-375 hp) or high output (420-425 hp) ADD $400 All the joints Corrosion-resistant black urethane paint Vortec cylinder heads, engine block and all internal components Roller cam and roller pushers Includes an engine circulation pump Will ONLY work in existing 8.1L applications Standard rotation ONLY Does NOT include the 8.1 L oil pan, valve covers, and harmonic balancer This engine block is entirely machined on our CNC machine. It features a machined crankshaft bearing and a bored cylinder with a cutting edge bearing. The block is assembled with brass plugs and has undergone a pressure test.
$7,200.00 - $10,200.00
This reconditioned GM 8.2L (502cid) marine engine is a direct replacement for engines (Gen V block) from 1991 to 2006 Oil pan, rocker cover and timing cover are optional $$$ An additional fee of $3000 may apply for engine molding. Gen V or VI block, standard rotation, forged piston and crankshaft, rectangular port cylinder head, 425 HP This engine block is entirely machined on our CNC machine. It features a machined crankshaft bearing and a bored cylinder with a cutting edge bearing. The block is assembled with brass plugs and has undergone a pressure test.
$7,200.00 - $10,200.00
This reconditioned GM 5.7L (350cid) Vortec marine engine is a direct replacement for 1996 and newer engines with 8 intake manifold bolts and standard rotation. Oil pan, rocker cover and timing cover are optional $$$ An additional fee of $1000 may apply for engine molding.
$4,100.00
This reconditioned GM 5.7L (350cid) Vortec marine engine is a direct replacement for 1996 and newer engines with 8 intake manifold bolts and standard rotation. Oil pan, rocker cover and timing cover are optional $$$ An additional fee of $1000 may apply for engine molding.
$2,600.00
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Discover our complete selection of professional-grade marine engines . Whether you're looking for a remanufactured engine from the 1970s to 2026 or a high-performance model, we offer reliable solutions for all your marine propulsion needs.
