Can anybody help me with this #'s. I have 2 engines the #
on the blocks are.3877178 this was in my 63 chevy II.
328578 was in a milk truck and the head had pipe plugs in it
at the exhust ports. Man give the engine out off the milk truck
just had to pull it.

Check out the 'Casting #s' link on the main menu to the left of the page, that shows the first one is a 230"-250", and the second engine is a 292".

Tim