a little help with engine #'s

OK so I am trying to figure out what era my FHead is.

The number on the top of the block by the water pump is 4J456607

The number on the side ( the casting #?) was 807895.

All the reference stuff I can find put that into the 53' - 54' range.

Can anyone help ?

( i was told by the PO that the body is not original)

It does have the 3 speed manual, and dual stick transfer case.

Thanks
Chris

 

per the FSM
"prior to 1967 all F4-134 engine codes were marked 4J plus the serial number"
that's all the help I can give

 

go to the www.cj3bpage.com they have a chart for all the numbers and years

 

If it helps you and I have the same drivetrain, mine is for sure a 63....

 

Here is the link to the cj3b serial number page:http://www.film.queensu.ca/CJ3B/SerialNos/SerialNosEngine.html

According to there database the motor is somewhere around a mid 1954 model.
The cast number on the side of the block is not your engine serial number. The engine serial number is here.