440 block ID

[Mopar001]

how can I tell if the block in my car is original or not? the stamp on the top of the block says:

F 440 0

3 31 HP2

 

[challenger6pak]

The numbers on the top show it to be the correct block year and type for your car. On the lower part of the block, by the oil pan side rail, you will find an indented flat machined area that will have the VIN number stamped on it. See if it matches your VIN.

 

[commando1]

Courtesy of FBBO:

4. The next item that is VERY important to numbers matching is the engine. For all 1967 and older engines (including low performance 1968 engines) you have to date the engine prior to the scheduled production date of the vehicle.
A. Small block engines (273-318-340-360) have the date stamped on the front of the below the driver's side cylinder head.
B. Big block B engines (383-400) have the date stamped on the front of the below the passenger's side cylinder head.
C. Big block RB engines have the (413-426-440) have the date stamped on the front of the block in front of the intake manifold ajacent to the distrbutor. This is true for all 1964-1967 Hemi engines.
D. Big block 426 RB engines have the date stamped on the oil pan rail at the rear flange under the starter. This is true for all 1968 383 & 440 engines.

For 1969 and newer engines (including 1968 high performance engines) a full or partial V.I.N. is stamped on the engine block.
E. 1968 HP engines are stamped on the top rear of the block near the oil sending unit.
F. 1969 and newer V8 engines are stamped on pad at the lower passenger side of the block above the oil pan.

Note: Early in the 1969 model year the complete 13 digit was stamped on the engine and transmission. mid year 1969 and later engines only the last 8 digits of the V.I.N. were stamped on the engine and transmission.

 

[detmatt]

Vin will be on the passenger side under the motor mount but just above the pan rail.

 

[440Sled]

Pull the numbers and Google them. It's that easy.