A small or big block Chevy have a casting number on the top of the block behind the driver side head. MorTec has Chevy casting numbers listed online.
read casting numbers and research on the web. Just Google small block Chevy heads castine numbers. These numbers are under the valve covers so you will have to take one off.
Under the valve cover where the valve springs are.
That casting number belongs to a 1971 Impala. It is a 400 small block chevy. These can be pretty good motors.
look on the bellhousing on the driver's side and write the numbers down and look the numbers up. Google 350 Chevy casting numbers online or go to your local library. the year and the casting number will give you all the specs on that engine.
1970-71 Chevrolet Small Block 400cid heads.
most of them are behind the passenger head on the block near the bell housing.
April 27, 1965.
It is stamped into the top of the heads where the valve springs are.
The numbers stamped in front of the head are the engine id numbers.
Are you asking how many freeze plugs are in a small block 400? If you are it varys, could be, 8 could be 10 depending on which casting you have. I hope this answers youre question.
Can't find that casting number - but it could be either a 307 or a 350. A list of small block casting numbers can be found here: http://www.nastyz28.com/sbchevy/sblock.php 39700XX is almost at the bottom of the list.