What year and size engine has casting number B1378704E
Need the casting # to answer that question.
2003
The Chevy engine with that casting number was made in 1993.
what year is 3970020
1969
1969
The Chevy engine with that casting number was made in 1993.
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 #
There is casting numbers on the side of the block, just above the freeze plugs, that will give the casting date. give those numbers to year one dot com or some dealers, that fool with classics. they have the chart to convert the casting numbers to dates.
1977
1987