There should be a label on the engine shroud or on the cylinder head with the serial number and model number on it. The label is usually on the front side.
the engine serial number is on the back of the block, behind the passenger side cylinder head. Not easy to access.
When you open up the cylinder, the serial number would be on the crane by the swivel and on the cylinder frame across from that serial number also.
On engine casing, passenger's side, on flange that bolts to transmission. Probably covered with engine gunk.
The engine serial number on1966 Ford Mustang(in-line 6-cylinder engine) on the driver's side fender, under the hood. On the engine look on the passengers side just above the freeze plugs near the bell housing
Serial number, and or engine or vehicle code are stamped on the cylinder deck on the right front of the block immediately in front of the right cylinder head. Casting numbers and date codes are on the right rear of the block just in front of the bell housing mounting surface.
In addition to the engine serial number, the horsepower rating is needed to determine the year model for a Mercury outboard.
On a Toyota 2.7 engine, the number 3 cylinder is typically located on the driver's side of the engine block. In a four-cylinder engine layout, the cylinders are numbered from front to back, with the number 1 cylinder at the front. Therefore, the number 3 cylinder is the third cylinder back on the driver's side.
You may have mistaken the '1' for a '2'..if your engine is a 4hp 2 cylinder it dates from 1978.
You would put the engine serial number under "Equipment Serial Number"
Frame number is located below gear shifter,slightly forward on bottom frame rail. Engine number is next to cylinder,exhaust side of engine,below exhaust
1961 serial number for 6d14 mitsubishi engine