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The GM 8.1L Vortec is a big block V-8 based loosely on the company's flagship 454 CID engine. The 8.1L shares the 454's 4.25 inch bore but features a longer 4.37 inch stroke length. At 496 inch cubic inches of displacement, the burly 8.1L Vortec is rated between 320 to 340 horsepower and 440 to 455 lb-ft of torque, depending on the model year.
16 lut 2024 · The Chevy 8.1 liter engine is a V8 engine that features a displacement of 8.1 liters or 496 cubic inches. It is a gasoline-powered engine that was introduced by General Motors in 2001 and was primarily used in heavy-duty trucks and recreational vehicles.
29 cze 2021 · Things had changed rapidly at GM on both the gas and diesel side of the equation, and with a 6.0-liter version of the LS V8 offering 360 horsepower and 380 lb-ft of torque while crushing the Vortec 8100 in terms of fuel economy (9-mpg city / 11-mpg highway), Chevrolet and GMC both decided to drop the large displacement engine in heavy duty ...
25 lip 2022 · Since the 8.1 is capable of handling a good bit more power than it came with from the factory, there is some decent potential with performance upgrades. A version of the engine made 550hp and 690lb-ft. of torque on the same block, head, and internals as the truck/SUV engines.
20 sty 2024 · With bolt-together kits available that send power as high as 685 horsepower and 680 lb-ft of torque naturally aspirated, there's plenty of appeal.
16 lut 2024 · The compression ratio of the Chevy 8.1 engine is 9.1:1, which ensures efficient combustion and optimal power delivery. It generates a remarkable 340 horsepower, allowing for quick acceleration and towing capabilities.
11 maj 2022 · That’s a range of 2600 rpm of usable torque higher than 400 lb/ft, peaking at 440-455 lb/ft (depending on the year of production) at 3200 rpm. Finally, the power increases to 320-340 hp at 4200 rpm. Along with Chevrolet and GMC vehicles, this motor was also utilized for Kodiak, vessels, and motorhomes.
