Engine serial # F0421LB (Flint, April 21, 1960, C60 basr engine)
Block casting # 3769717
Block casting date D140 (April, 14, 1960)
Head casting # 3836848 (from a 235)
I don't have the head casting date yet

~Denny
1953 Chevy 3100
w/1960 261 cid, 848 head | Weber 32/36 progressive 2 barrel carb. | Three on the tree & 3:55 torque tube | 12 V w/Gener-Nator & 6 V starter
In the Gallery Forum
1998 Chevy Suburban 350 ci awd/4wd