See Figures 1 through 9
The engine that the factory installed can be identified by one of the digits of the Vehicle Identification Number, as explained earlier. The engine itself can be identified by the engine serial number. The cubic inch displacement is given by the second, third, and fourth, or the third, fourth, and fifth digits of the engine serial number, depending on the year and engine.
Inline 6-cylinder engines have their serial number stamped on the joint face of the block, just below the number six spark plug.
318 and 360 cu. in. V8s have the number on the front of the block, just below the left cylinder head.
The 238 cu. in. V6 has the serial number stamped on a pad on the right side of the block.
400 cu. in. V8s have the number on the right side of the block ahead of the base of the distributor.
440 cu. in. V8s are numbered on the left bank front tappet rail.
318 and 360 cu. in. (small block) V8s can quickly be identified as having the distributor at the rear of the engine, while the 400 and 440 cu. in. V8s have it at the front.