Chevrolet’s 454 big-block V8, in its LS6 tune-up, threw a gauntlet so heavy that not a single rival dared pick it up. 450 horsepower and 500 lb-ft remained unchallenged for the rest of the ...

Add HotCars to your Google News feed. Other rare big-block Chevy motors include the powerful 454 LS6 V8 engine. The 454 was introduced in 1970, as the LS5 that made 390 hp and 500 lb-ft.

Famously featured under the hood of the 1970 Chevy Chevelle SS 454, the 454 V8 is a big-block engine that helped define the golden age of muscle cars. Very few engines ever came close to the power ...