i picked up a std. bore 340 today. 1969 casting 1970 model complete long block. 7 / 8 / 69, vin# 0B235705. numbers on front of block are as follows:
FW340P30690080. THEN A MALTESE CROSS, and below there is L3 twice and they are both kinda upside down, and much deeper than the other numbers...