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In 1968 they made 327's with this casting number but they were only 2 bolt main.
Then from 1969 - 1979 they made 350's with this number and they were either 2 or 4 bolt main.
If it's a 4 bolt main, then you know it's a 350.
To determine exactly what you have, you need the block "suffix code".
It's on the front of the engine, just in front of the passenger side head. It's on a machined pad only found on that side of the engine. Run a search with the numbers you find there for more information.
Alternatively, if the number cannot be read for some reason, (this happened to me) and if you're not going to check the main bearing size, (which requires removing the oil pan) then you can measure the stroke. 327's have a stroke of 3.25 inches while 350's have a stroke of 3.48 (basically 3 and a half) inches. To measure the stroke you will need to remove one of the heads, and turn the crank until one of the pistons is BDC (bottom dead center). Then measure from the outer diameter of the piston to the top of the cylinder wall. If it's 3 and a half, you've got a 350, if it's 3 and a quarter, you've got a 327. Both blocks have a stock bore of 4.00 inches.
What else can I help you with?
What year is a 350 Chevy engine with casting no 3970010 and 12w297191?
1969
What year and model is a 350 Chevy engine with casting no 3970010 and V0609CNN?
1996
What year is a 350 Chevy engine with casting no 3970010 and c5j129384?
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 #
What year is a 350 Chevy engine with casting number 3970010 and V0725ckl on front of the block?
i called the Chevy dealership and they told me the year
What year is a 350 Chevy engine with casting 3970010 and 15y146329?
The back of the block will have a series of letters and numbers cast into it. That is what determines the date.
What is the year range for a 350 Chevy engine with casting no 3970010?
1969 to 1979 I've seen those blocks up to the mid-80's.
What year is a 350 Chevy engine with casting no 3970010 suffix code V01I7TDD?
The casting number 3970010 identifies the engine as a 350 cubic inch small-block Chevrolet engine produced between 1969 and 1979. The suffix code V01I7TDD indicates that the engine was built in the Tonawanda, New York plant, on January 7, 1970. Therefore, this engine is most likely a 1970 model year engine.
What year is a 350 Chevy engine with casting no 3970010 and 13w221249?
That engine could be anywhere from a 1969 to 1972 350. Some of them were 4-bolt mains and some were just a 2-bolt main engine.
What year is a 350 Chevy engine with casting number 3970010 and v0815tja on front of the 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
What year is the Chevy motor with the casting numbers of gm 3970010?
it is a 1969-1979 motor it was used in cars, trucks, and vettes
What year is a chevy engine with casting number 10066036?
The Chevy engine with that casting number was made in 1993.
A Chevy engine with casting number 10066036 what year is it?
The Chevy engine with that casting number was made in 1993.
