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The W Returns – Building a Chevy 409-CID “W” engine » MCP-0901-409-4

Beginning in 1962, an “X’ was cast into the front of the 409 blocks, as well as 348 truck replacement engine to denote the performance orientation. These are the good ones to start with. Note the screw in freeze plugs.

Beginning in 1962, an “X’ was cast into the front of the 409 blocks, as well as 348 truck replacement engine to denote the performance orientation. These are the good ones to start with. Note the screw in freeze plugs.


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