C J Castings
CJ-3A Engine Casting & Serial Numbers
Casting Numbers
C J Castings Llc
CJ-3A Engine Casting & Serial Numbers. Casting Numbers. All CJ-3A engine blocks should have the following casting number located on the lower right hand side of the engine block: 641087-L-W11-A-NI-CR-N2. It's important to note that not all casting numbers are the same. The first number, 641087 is common to all CJ-3A engine blocks. CJ Bearings is a full line industrial bearing manufacturer and distributor specializing in radial ball, agricultural, forklift, and insert bearings. We also carry cast iron mounted units, thermoplastic, stainless steel, nickel plated units. Making the finest hard-cast bullets at affordable pricing. My manufacturing techniques and commitment to consistency ensure that the quality of each of my hard cast bullets is second to none in terms of match-accuracy. Bullets are ready to ship right now in boxes of 500 or bags of 250.
C & J Casting CLAIM THIS BUSINESS. 3006 N DAVIDSON ST - CHARLOTTE, NC 28205 Get Directions (704) 374-9400. Founded 2013; Incorporated.
All CJ-3A engine blocks should have the following casting number located on the lower right hand side of the engine block:
641087-L-W11-A-NI-CR-N2
It's important to note that not all casting numbers are the same. The first number, 641087 is common to all CJ-3A engine blocks. I have seen two versions of the casting numbers with 'W11' and 'W12.' The theory is that this is the forge or cast number. NI is Nickel and CR is Chrome. These two metals are used to give the Iron in the casting alloy properties so it can expand and contract and be machined to function as an engine block. Back in the early days of the automobile many inferior engines were produced because they did not have the proper type or amount alloys in them. Automakers marked their blocks to show what different alloys were being used. This is holdover from those days and even GM into the 1960s marked different alloy codes into different engine blocks for identification of properties and uses. I do not know what the final 'N' and digit represent. Nitride has been suggested.'
Serial Numbers
C & J Castings Limited
The engine serial number can be found on the waterpump boss at the front of the engine:
C J Castings Corporation
From my research, the engine serial number should begin with 3J, and be followed by the serial number, so in my case, 3J39505.