Introduced in 1970, the Chevy 454 — affectionately known as the Rat Motor – was the largest displacement Chevrolet engine to enter the big-block engine showdown of the muscle car era. At 454 cubic ...

Well cover the details shortly, but for now, all you really need to know is this: GM Performance Parts new LSX 454 is the most powerful crate engine in the history of Chevrolet. Rated at 620 hp and ...

As crate engines go, GM Performance Parts' 454 H.O. crate engine is not only a bargain at its street price of around $4,600, its forged crank, pistons, and rods also make it capable of handling nearly ...

The phones rang off the hook when we covered the components and dyno testing of the low-buck 454 from Demon Engines in the Oct. '10 issue. Checking in at $2,650 outright (minus carburetor), the ...