Those may not be the numbers needed for correct identification. I've seen that 3970010 on many, many blocks. The block number you need is usually stamped into a small id plate just ahead of the right cylinder head. The head numbers are under the rocker covers, and can be difficult to read if they are covered in sludge, which is common.
With the correct numbers, you could go to a website such as: http://www.auto-ware.com/techref/castnum.htm to answer your question.
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 #
1977
i called the Chevy dealership and they told me the year
350 and 327 [1966 - 1980]
The back of the block will have a series of letters and numbers cast into it. That is what determines the date.
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.
3970010 can be a 350 two or four bolt block.
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
GM engine block # 3970010 was used as early as 1968 on some 327ci engines. From 1969-1979 it was a 350ci engine. It could be a 2 or 4 bolt block used in cars, trucks and even corvettes. You can also find these blocks with a "MEXICO" stamp on them near the block ID. It has been said that these are high nickle content blocks and may be stronger than others.
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.
It's a 4" bore block. Has been used for 302, 327, and 350 engines.