Casting #  Type           Year       Displacement

3732791     W Block Heads   1958-1960   348 CID

3758379     W Block Heads   1959-1961   348 CID, 250hp

3759256     W Block Heads   1958        348 CID

3759332     W Block Heads   1958-1960   348 CID

3764702     W Block Heads   1960        348 CID, Truck

3767738     W Block Heads   1959-1960   348 CID, 250hp

3781147     W Block Heads   1960-1961   348 CID, high performance, 2.06/1.72 inch valves

3781173     W Block Heads   1960        348 CID, 1.94/1.66 inch valves

3795586     W Block Heads   1961        348 CID or 409 CID, high performance, 2.06/1.72 inch valves

3814690     W Block Heads   1962-1963   409 CID, high performance, 2.19/1.72 inch valves
 
3815643     W Block Heads   1958-1962   348 CID or 409 CID, truck, industrial

3815857     W Block Heads   1958-1962   348 CID or 409 CID, truck

3819333     W Block Heads   1962-1965   348 CID or 409 CID, heavy duty truck

3830817     W Block Heads   1963-1965   409 CID, 340hp

3837731     W Block Heads   1963        427 CID, Z11, 4.312 inch bore, 3.65 inch stroke

3852583     W Block Heads   1963-1965   409 CID, high performance, 2.19/1.72 inch valves