Brand New GM Marine 454 V8 392 Horsepower Long Block

• 392 HP @ 5200 RPM / 447 lb. ft. @ 4000 RPM (PFI)
• 1-Piece Seal
• 4-Bolt Main
• Rectangular Port
• Roller Cam
• 8 Quart Oil Pan

Must use an electric fuel pump.

NO - Intake, flywheel, or water pump.

Brand New GM Marine 502 V8 Long Block

• 415 HP @ 5000 RPM / 504 lb. ft. @ 3800 (4bbl)
• 1-piece seal
• 4-bolt main
• Rectangular port
• Roller cam
• 8 Quart oil pan

Must use electric fuel pump, No - intake, flywheel, or water pump.

Brand New GM Marine Chevrolet 350 V8 Long Block Engine

• 260 HP 350 CID 5.7 Liter
• Replaces 1967 thru 1985
• 260 HP @ 4400 RPM / 350 lb. ft. @ 3200 RPM (4bbl)
• 1-piece seal
• 4-bolt main

MUST use electric fuel pump.
No - intake, flywheel, balancer or water pump. (12-bolt pattern style for your intake manifold)

Brand New GM Marine Chevrolet 350 V8 Long Block Engine

• 260 HP 350 CID 5.7 Liter
• Replaces 1986 thru 1995
• 260 HP @ 4400 RPM / 350 lb. ft. @ 3200 RPM (4bbl)
• 1-piece seal
• 4-bolt main

MUST use electric fuel pump.
No - intake, flywheel, balancer or water pump. (12-bolt pattern style for your intake manifold)

GM Marine 7.4 Litre (454 CID)
305 HP @ 4400 RPM / 435 lb. ft. @ 3200 RPM (PFI)

1987-2001, 1-piece seal, 4-bolt main, oval port, roller cam, 8 qt. oil pan, must use electric fuel pump.

No intake, flywheel, or water pump included.

GM Marine Vortec™  5.7 Litre (350 CID)
330 HP @ 5000 RPM / 480 lb. ft. @ 3800 RPM (PFI)

Specially tuned, this 350 delivers great power in a small package. With its Vortec™ cylinder heads this 350 makes great power for the performance enthusiast. Peak torque is 480 lb ft @ 3800 RPM while peak horsepower is 330 hp @ 5000 RPM. No intake manifold, water pump, balancer or flywheel. Must use electric fuel pump. Will fit 1986-2002.

New GM High Performance Marine Base Engines - HP500 Replacement Engine

• GM Standard Deck Mark VI 502 base engine 4.47 x 4.0
• 9 to 1 compression ratio
• GM forged crank, rods and pistons
• Crane hydraulic roller cam, springs, lifters, push rods, and rocker arms
• GM Heads Ported with 2.250 S/S Intake and Inconel Exhaust Valves
• 8 qt. oil pan
• Flywheel and dampner
• 500 HP @ 5200 RPM / 575 ft/lbs of torque @ 4800 RPM

New Vortec 4300 4.3L V6 Long Block - 4 Barrel Version

• 4.3 Liter 262 CID
• 223 HP @ 4800 RPM / 267 lb. ft. @ 2800 (4bbl)
• Fits 1986-2002 OMC / MerCruiser / Volvo

MUST USE ELECTRIC FUEL PUMP
Coupler must be changed and an electric fuel pump must be used. 4bbl carburetor must have electric choke. 1 -piece rear main seal.

New Vortec 4300 4.3L V6 Long Block -  2 Barrel Version

• 4.3 Liter 262 CID
• 223 HP @ 4800 RPM / 267 lb. ft. @ 2800 (4bbl)
• Fits 1986-2002 OMC / MerCruiser / Volvo

MUST USE ELECTRIC FUEL PUMP
Coupler must be changed and an electric fuel pump must be used. 4bbl carburetor must have electric choke. 1 -piece rear main seal.

Vortec 5700 New GM Marine 350 295 Horsepower Long Block - 1998 thru 2002

• 5.7 Liter (350 CID)
• 295 HP @ 5000 RPM / 355 lb. ft. @3600 RPM (PFI)
• 1-piece seal
• 4-bolt main
• New style Vortec heads

Needs electric fuel pump. (8-bolt pattern style for your intake manifold).
Note: This motor has a plastic timing cover which requires a special balancer. This special balancer is available upon request.