When did Chevy stop making the 454 engine?
Unfortunately the Chevy 454 was the right engine at the wrong time. Uncle Sam started to tighten down on emission controls in 1971 which affected a lot of the power of the 454. Another big blow for the 454 was the gas crisis of 1973 which pretty much sealed the fate for the motor during this period.
How many horsepower does a Chevy 454 V8 have?
Chevy V8 LSX Engine Storage Stand. The 1970 production models of the 454 put out the most horsepower with the LS5 claiming 360 horsepower and the LS6 putting out a mighty 450 horsepower.
How does the ignition work on a Chevy 350?
The engine’s ignition system is triggered by an electronic driver which signals the ignition coil when to fire. By design the resistance it takes to fire the coil via the spark plug is figured into the system.
What kind of gas mileage does a 454 TBI get?
GAS MILEAGE. Always a big complaint with 454 TBI trucks. 90 and older is particularly bad and that is largely due to NO OVERDRIVE. Nothing is going to help that fuel mileage more than overdrive.
What was the difference between a Chevy 454 and a Chevy W?
Cylinder heads adopted a wedge chamber in place of the W-motor’s chamber-in-block setup, angled spark plugs and revised valve placement provided an improvement in high rpm efficiency and power, and the engine gained significant weight over the W.
Is the Chevy 454 LE8 still in use?
The LE8 version still served GM trucks through 1991, although its horsepower rating varied from a low rating of 215 horsepower in 1974 up to about 230 in 1991. The standard transmission matching the LE8 454 on 1973 to 1987 trucks was the four-speed Muncie manual.
Unfortunately the Chevy 454 was the right engine at the wrong time. Uncle Sam started to tighten down on emission controls in 1971 which affected a lot of the power of the 454. Another big blow for the 454 was the gas crisis of 1973 which pretty much sealed the fate for the motor during this period.
Which is 454 engines were in Chevy one-tons?
The 1973 1-ton trucks were equipped with a 240-horsepower 454 generating 355 foot-pounds of torque. In 1977, General Motors offered special trailering packages for its Chevys and GMC trucks, including the 1-tons. These 454s with four-barrel carburetors developed 230 horsepower and 360 foot-pounds of torque.
Why did my GM 454 Backfire at WOT?
I replaced the in tank fuel pump last month thinking it was fuel starvation while going up hills at WOT (wide open throttle). The fuel pressure with the old pump was low showing around 8 psi on the pressure gage that I permanently mounted 3 inches from the throttle body on the pressure line.
The LE8 version still served GM trucks through 1991, although its horsepower rating varied from a low rating of 215 horsepower in 1974 up to about 230 in 1991. The standard transmission matching the LE8 454 on 1973 to 1987 trucks was the four-speed Muncie manual.