It's a 4" bore block. Has been used for 302, 327, and 350 engines.
A81 should be January 8, '71,'81,'91.
Gm 3970010 the model?
casting number 3970010 is a 350 block from 1969 - 1979 but in 1969 302 and 327 have the same casting # and im not to sure about the other #
it is a 1969-1979 motor it was used in cars, trucks, and vettes
350 and 327 [1966 - 1980]
those numbers are the date that it was built k=month .... 24=day ..... 5=year November 24 1965 or 1975
4bolt 350ci
1968------327 & 1969-79 ----350
a 350 or 327 that is the question. A 350 or a 327
What engine casting number is 14010207
1970 Z28...Stacy
No. That number was used for 302's, 327's, and 350's. (4" bore)