GM gave the engine a bore of 3.9 in. with a 3.62 in. stroke, creating 5.7L of engine displacement. The cast iron you would be able to find was used for the crankshaft for durability.

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This popular engine is relatively easy to find, so keep your eyes open. If you're dead set on picking up an aftermarket LSX, the option is there, but you'll need to shell out major cash.