Matching Numbers and Build Sheet Information        

So what's all the hype about matching numbers and what does it all mean?  Well, car collectors are apt to pay more for a muscle car that comes with the original motor and transmission, rear end, radiator, and most every other original part.  Although recent Barrett Jackson auctions on Hemi clone 'Cuda's did show that these "recreations" as they are called can still fetch a lot of money.  Having the factory build sheet, which is a piece of paper stuck under the rear seat that shows all the factory options and exact build record for the car is also an important aspect as is the original fender tag for the car.  These items lets you de-code the car to exact factory order specifications.

My Dart Swinger happens to be an original matching numbers car and I also have the original factory build sheet.  The serial number (VIN number) on the dash board matches the number stamped onto the engine block.  A true factory 340 Dart Swinger car has the "H" code in the serial number while a 318 engine car has the "G" code in the serial number.  Here are pictures of my various engine casting numbers with indications of what they mean and the factory build sheet and fender tag.  Also visit this web site for more detailed information on Mopar engine casting codes.

Casting numbers on front left corner of engine block

Close up - casting numbers on front left corner of engine block

Casting numbers on passenger side of engine block

Casting numbers on lower front passenger side of engine block

Casting number on center of passenger side of engine block

Factory build (broadcast) sheet

Original car fender tag

Decoding of Fender Tag: Bottom to Top, Left to Right

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