Ok, thank you. My son has the car up for sale and the bank was wanting to verify that this was the original motor that came with the car in order to loan the guy the money for the car. Looks like that’s not the case. Thanks gentlemen.It's not possible to misprint (or miss stamp) a casting number as the number is cast directly into the casting when the block casting is poured. It is not stamped on the block. The only stamped numbers are located on the passenger side pad on the front of the block. If that has been removed this is probably a remanufactured engine. Is it important to know exactly which 409 engine this is? If you're wanting a numbers correct motor, this block won't help.
Here is the block # CM is talking about. It appears to be a 425/409 engine. Could it be that the block # is actually 3844422 and shadows are making it look like a different number.
No, Took pictures from several angles and it reads like it is. The guy bought it as it stands. Guessing the bank was okay with it .I agree and thought that myself that it very well could have been mis-read.