Ford Model A VIN Decoder: History, Engine and VIN Lookup Guide
Every Ford Model A carries an identification number, and reading it is the quickest way to confirm what a particular car really is before you trust a seller’s description. The Model A was Ford’s hugely successful follow up to the Model T, built from 1927 to 1931 in a wide range of body styles, and it remains one of the most popular cars in the classic and hot rod worlds. Built decades before the 17 character VIN, the Model A is identified by its serial number, which in this era was the same as the engine number.
You can run a Model A number through the decoder at the top of this page, and the guide below explains how the numbering works, covers the engine, and points out what matters most when you check one.
How a Ford Model A VIN is put together
The Model A predates the 17 character VIN by half a century, so it does not have a modern VIN. Instead the car is identified by its serial number, which Ford stamped as the engine number on the top of the engine block and also on the frame. That number is what registration and clubs use to identify the car and place it in the production run.
Because the serial number is the engine number, a car whose engine has been changed over the decades may carry a number that does not match its original frame, which is common on cars this old and worth understanding. The quick reference below covers the clues you will use most often when you read a Ford Model A number.
| VIN clue | What it means |
|---|---|
| Serial number | The car’s identifying number, the same as the engine number |
| Engine block stamping | The number is stamped on top of the block |
| Frame stamping | The number was also stamped on the frame |
| Body style | Roadster, coupe, Tudor, Fordor, phaeton, pickup and more |
| Title and paperwork | Should match the serial number on the car |
On a car this old, understanding that the serial number is the engine number, and checking it against the paperwork, is the first thing to do.
A short history of the Ford Model A
The Model A replaced the long running Model T in 1927 and was a huge leap forward, with a more powerful engine, a conventional gearbox and proper styling that came in a remarkable variety of body styles, from open roadsters to closed sedans and pickups. Ford sold millions in just four years. Its simplicity, charm and strong parts support have made it a favourite for restorers and hot rodders alike, and it is one of the easiest prewar cars to own. The table below sums up the car.
| Generation | Years | Body styles | Engine |
|---|---|---|---|
| Ford Model A | 1927 to 1931 | Roadster, coupe, sedan, phaeton, pickup | 3.3 flathead four |
Ford Model A engine and specifications
The Model A used a single engine throughout its life, so confirming it is present and sound is part of checking the car. The figure below covers the engine.
| Configuration | Years | Power | Layout |
|---|---|---|---|
| Ford Model A 3.3 four | 1927 to 1931 | about 40 hp | Flathead inline-4 |
Ford Model A by model year
Buyers searching for a specific year want to know what they are getting, so the table below maps the production years. The Model A is identified by its serial number, which is the engine number, rather than a modern VIN.
| Model year | Identification | Engine |
|---|---|---|
| Ford Model A 1928 | serial and engine number | 3.3 four |
| Ford Model A 1929 | serial and engine number | 3.3 four |
| Ford Model A 1930 | serial and engine number | 3.3 four |
| Ford Model A 1931 | serial and engine number | 3.3 four |
Reliability and the things worth checking
The Model A is famously simple, robust and well supported by parts suppliers, so the real questions are originality, condition and whether the numbers tell a consistent story. The most common points to check are summarized below.
| Engine or area | What to check |
|---|---|
| Ford Model A engine number | Check the number on the block and frame and understand any mismatch from past engine swaps |
| Ford Model A mechanicals | Simple and rebuildable, with excellent parts support, check for general wear |
| Ford Model A body and wood | Check the body and, where used, the wood framing for rot and corrosion |
| Ford Model A originality | Decide whether you want an original car or an accepted hot rod build, as both are common |
Buying a used Ford Model A
When you find one worth pursuing, read the serial and engine number and check it against the car and the paperwork, keeping in mind that the serial number is the engine number, so a replaced engine changes the story. Parts and knowledge are plentiful, so condition and how original or modified the car is will matter most to the price.
When you are ready, enter your Ford Model A number in the decoder above, then use the advice here to make sure the car is genuinely what it claims to be.