340 engine id

[koshe]

 where the ID codes are on my 340?

[Ghoste]

Drivers side, front of block, under the cylinder head.  There are more but that should have the cid, is that all you are looking for?

[koshe]

I am trying to figure out just whhat motor is in my car! I am told it is a 70 340.

[Ghoste]

There will also be casting numbers and date codes cast into the block on the sides.

[koshe]

The stamp under the head reads
EW340P2552   11
Can someone decode this?

Thanks

[Ghoste]

The first 2 digits indicate a 68-71 340 engine assembled at the Windsor plant.   The next 3 are the displacement.  The "P" I don't know and the next four are the day it was assembled which in this case works out to July 23, 1969.  The 11 is a field code and I don't know it either.

[John_Kunkel]

The "P" means Premium fuel needed, the 11 means it was the eleventh engine built that day. The late July '69 build date makes it a '70 model year.

There should be a VIN stamped on a machined flat just above the pan gasket on the passenger side of the block.