1977
3970010 can be a 350 two or four bolt block.
It's a 4" bore block. Has been used for 302, 327, and 350 engines.
Numbers on the motor of trucks and other vehicles are identification numbers for the engine block casting. These numbers identify the batch of production the engine block comes from and can be used in recalls.
The back of the block will have a series of letters and numbers cast into it. That is what determines the date.
350 and 327 [1966 - 1980]
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 #
you need the date code on the side of the block it will be a series of numbers and letters first its the month, then day, then year
Blocks that have more nickel have 010 or 020 under the timing cover, meaning 10% and 20% nickel.
3970010 is a 327 in the years from 1967-1969 and 350 from 1976-1979
yes. that is one of several blocks used for the 302.
It's a 4" bore block. Has been used for 302, 327, and 350 engines.
i called the Chevy dealership and they told me the year