according to my book this is a '65 chevelle 327 300 hp.
it's dated L184, it had 461 heads.
casting number is 3782870.
i posted this because of the crooked alignment of the stamped numbers.
even the EB is a bit off of the rest of the engine code.
it's an original stamp, the block has never been decked.
just shows, perfect ani't always perfect.