Need Help Please!

[zipnails]

Need to know if these two blocks out of 69 Impala's are a 302,327,or 350?These are the numbers on each block 3956618 K0617F2 and 3956618 K0702F3.Any help much appriciated.Thank you! Juanita

[tinman]

3956618....302.....69....4...Z-28 Camaro
3956618....327...68-69...2
3956618....350.....69....2 or 4

i guess it depends on how they were machined and/or assembled

http://www.mortec.com/castnum.htm