In 67 only a 273 was available in A bodies. You could not get a semi hemi in an A body
In 68 both 273LA AND 318LA were available.
67 casting dates does not mean it is a 67 318.
Under the front of the drivers side head there is a code stamped into the block
My bet is yours starts with a D = 68 model year
How to ID a Small Block Engine Block:
In this example the block was cast in 63 but the engine is for a V = 64 model year car.
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