The LS3 crate engine is ... with Chevrolet. As of April 2024, the standard 430-hp LS3 6.2L model runs for roughly $9,679.21, a 20% markdown from its suggested retail price of $12,175.11.

that power does come at a price. The LSA engine was nearly twice as expensive as the LS3 when it was still available as a crate engine from Chevrolet Performance; at $14,006 for the long block ...

Gone is our old 383ci small-block and in its place is a Chevrolet Performance LS376/525 all-aluminum, fuel-injected crate engine that is probably underrated at 525 hp and 475 lb-ft of torque.