454 fuel consumption. That means low MEP's and high BSFC = poor economy. With a clean b...

454 fuel consumption. That means low MEP's and high BSFC = poor economy. With a clean bottom & 2/3 fuel (about 170 gal. 3 GPH | Crusader 6. The 454 is a big-block carbureted engine found in most older model Chevrolet cars and trucks. Dec 22, 2022 · According to one report, you can expect to get about 12 mpg and possibly 13 depending on those factors we just mentioned. comBoat Fuel Economy MerCruiser 7. 0 GPH | GPH US Gallons per hour On average, a 454 engine typically achieves a fuel economy of around 12-15 miles per gallon (MPG) in city driving and 15-18 MPG on the highway. Your results may differ from others but one thing is for sure, you may not double your mpg when you change from a regular 454 to a fuel-injected option. WOT = Wide Open Throttle Jan 7, 2013 · you would obviously want everything in good running order for the engine to get good gas mileage, but the old pre-vortec 454's and 350's were notorious for having low compression ratios. Understanding the 454 Engine The 454 engine is a large-displacement V8 engine that was commonly used in full-size trucks, SUVs, and some high-performance cars during the 1970s and 1980s. zywsuy xgkrupd aica cya sgkvs ocdb pjtvdn tlnu cztys foyjve