During the American Muscle Van Period of the slow 1960s to the early 1970s, Chevy developed a series of engines, commonly referred to as "Colossal Blocks." In 1970, Chevy rolled elsewhere an huge 7.5-liter, 454-cubic-inch commodious block, V-8. A V-8 of this dimensions can easily be setup to cause in excess of 500 horsepower.The 330-horsepower, marine 454 is disparate from the 454 car engine from which it was derived. Because boats have just one gear and very different power and torque requirements, everything that shapes power and torque characteristics are different: compression, valve-train, intake and headers. Water pumps for marine engines are specifically designed to resist corrosion because the systems use open water for cooling and may contain salt, minerals and all kinds of chemicals. Marine carburetors are also designed so that fuel delivery is uninterrupted despite the extreme pitch of the boat during cornering.
Based on the identical 454-cubic-inch copious block Chevy, Habitual Engine's Marine Engine division allot up the Engine specifically for apply in boats. On account of General Motors was not a boat maker, on the contrary a Engine and motorcar maker, their marine engines division regularly sold parts to companies specializing in setting up marine engines such such as Mercruiser.
While the 454 was used in high-horsepower cars such as the Corvette and Chevelle, the Chevy 454 motorcar engine unreal 330 horsepower inventory. Chevy's origin firm, General Motors, adapted the 454 automobile engine into the 330-horsepower, 454 marine engine.
GM Marine EnginesAll electrical components must be able to resist a hostile, wet environment.
454 Marine Specs
The GM marine 454 had a bore of 4.25 inches and stroke of 4 inches with compression ratio of 8.1-to-1. The engine breathed through a four-barrel carburetor, and ignition was provided by a Delco Electric unit. The marine 454 weighs 980 lbs and makes 330 horsepower, at its maximum RPM of 4,400.