On 27 Oct 2006 11:02:33 -0700, "jamesgangnc"
wrote:

Is there some reaosn to think it is not a 1977? If you can find the
merc tag with the serial number on the engine that will help you. If
you think the engine has been replaced at some point and there is no
tag then you may be able to find a number stamped in the block that
would give you an idea. It's usually really hard to find these except
with the engine out of the boat though. The 3.0 is a gm 4 banger and
is relatively unchanged over the years if you are looking for parts.

wrote:
How do I determine the engine year?
It's a i/o with a 1977 pre alpha outdrive.
Engine is a 3.0L 140HP.
Thanks
Yes Engine was changed about 3 years ago by
previous owner.Only serial # I could find was on
the flame arrester,but how accurate is that. Anybody
can change the flame arrester. Yes it is for ordering
parts.On engine block all I see is:
14097080 GM HECHO EN Mexico
Thanks for help.