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engine numbers

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maggot

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Can anyone tell me what these numbers stand for, I found them on the engine block just in front of the right rocker cover
15S409973 V12l8CHB

VIN #1Z37J5S409973. I know what the vin stands for.
I found my build sheet yesterday that was really good,:J
 
maggot said:
Can anyone tell me what these numbers stand for, I found them on the engine block just in front of the right rocker cover
15S409973 V12l8CHB

VIN #1Z37J5S409973. I know what the vin stands for.

Looks like it is a matching numbers engine. The 15S409973 is the VIN deritive. Note the S409973 matches the last of the VIN.

The V1218CHB is the engine useage/build codes. V=Flint Engine plant, 1218=engine assembly date (Dec 18), and the CHB=base L48 with auto trans and federal emissions.

Your '75 coupe was built in early Jan 75. So the Dec 18, 74 engine assembly date looks right.

tom...
 
Thanks Tom

Thats really helpful, good to know I've got an original car.
I only joined this group yesterday and I have had so much help already.
Thanks :beer
 

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