3970010 can be a 350 two or four bolt block.
1977
Gm 3970010 the model?
That should be a 4 bolt main 350
It's a 4" bore block. Has been used for 302, 327, and 350 engines.
it is a 1969-1979 motor it was used in cars, trucks, and vettes
No. That number was used for 302's, 327's, and 350's. (4" bore)
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]
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 numbers you provided suggest that your Chevrolet 350 engine was manufactured in 1980. The casting number GM 3970010 corresponds to a 350 cubic inch engine produced between 1969 and 1980, with the suffix code V0817TBC indicating that it was assembled in August 1977 at the Van Nuys plant. Therefore, your engine most likely dates back to 1980.
Blocks that have more nickel have 010 or 020 under the timing cover, meaning 10% and 20% nickel.
those numbers are the date that it was built k=month .... 24=day ..... 5=year November 24 1965 or 1975