Big block Chevy crate engines from GM Performance and BluePrint Engines: 454 crate engines including the GM 454 HO (438 HP) and the BluePrint 454, the GM 502 and ZZ502, two GM ZZ572 builds (621 and 720 HP) and the BluePrint 632 cubic inch Pro Series rated at 815 HP. Carbureted and EFI versions are available, priced from $8,972.
Showing all 13 results
454 crate engines
The 454 cubic inch (7.4L) big block is the classic choice for muscle cars and trucks. Choose the GM Performance 454 HO (438 HP) or the BluePrint 454, which comes as a long block, dressed, or EFI with a complete kit. Each BluePrint listing shows its rating. For specs and factory ratings by year, see our Chevy 454 big block guide.
502 and ZZ502 crate engines
GM Performance offers the 502 (8.2L) in two versions: the GM 502 HO crate engine (part 19433157) at 461 HP and the ZZ502 (part 19433162) at 508 HP.
572 and 632 crate engines
For maximum displacement, the GM ZZ572/620 is rated at 621 HP and the 572/720 at 720 HP. The BluePrint 632 cubic inch Pro Series big block is rated at 815 HP.
Before you buy a big block
Big blocks are physically larger and heavier than small blocks, so check hood clearance, exhaust routing, cooling capacity and transmission strength. Compare small block Chevy crate engines if you need a lighter package. Our big block vs small block guide explains the differences.
Frequently asked questions
What is the difference between a 454, 502 and 572?
They are big block Chevy displacements: 454 cubic inches (7.4L), 502 (8.2L) and 572 (9.4L). More displacement generally means more torque and horsepower, and the 572s here are rated from 621 to 720 HP.
Do big block crate engines include a carburetor?
Only the dressed carbureted versions do. Long blocks do not, and EFI versions include fuel injection instead. The product page lists what is included.
How much horsepower does a 454 make?
Factory 454s varied by year and version. The GM Performance 454 HO crate engine here is rated at 438 HP, and each BluePrint 454 listing shows its rating.
Can you build a 496 from a 454?
Yes. A 4.250" stroke crankshaft with pistons for a 4.310" bore makes about 496 cubic inches. The Eagle BBC 496 stroker rotating assembly is that combination, and the GM 454 block lists 4.310" as its intended maximum finish bore.
Related: Small block Chevy crate engines, BBC engine blocks, Aluminum connecting rods and rotating assemblies, All crate engines, Big block Chevy firing order, big block vs small block.