We found three Chevy small-block crate engines with at least 500 horsepower with displacements including 376, 400, and 427 cubic inches (6.2, 6.6, and 7.0 liters, respectively).

Chevy Performance Releases a ZZ6 Crate Engine to Celebrate the 60th Anniversary of the Small-Block. Marlan DavisWriter MotorTrend ArchivesPhotographer GMPhotographerOct 01, 2015 ...

The Chevy 454 short-block option, priced at $5,481.69, provides the same four-bolt main cast-iron engine block and rotating assembly as the $8,971.76 454HO complete crate engine option.