Ford Custom (1965 to 1981) VIN Decoder: History, Engines and VIN Lookup Guide
Every Ford Custom 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. From 1965 the Custom and Custom 500 were the value full-size Fords sitting below the Galaxie and LTD, sold as plain, durable sedans that were popular with families and fleets, and the Custom 500 continued in Canada into the early 1980s. The number confirms the model year, the engine the car left the line with and the plant that built it. You can run a Custom number through the decoder at the top of this page, and the guide below explains the format, walks through the eras, and points out what matters most when you check one.
How a Ford Custom VIN is put together
Most of these cars predate the 17 character VIN that Ford adopted in 1981, so they carry a shorter identification number found on the data plate and stamped on the body, where the first character is the model year, another is the assembly plant, and further characters give the body and engine codes. The very last Canadian built cars from 1981 use the modern 17 character VIN beginning with a Ford code. The engine code is the part that matters most, because it separates a six from a small-block or big-block V8. The quick reference below covers the clues you will use most often when you read a Ford Custom number.
| VIN clue | What it means |
|---|---|
| First character (pre-1981) | Model year, for example 6 is 1966 and 0 is 1970 |
| Assembly plant | A letter identifying the factory |
| Engine code | For example a 240 six, a 302 or a 429 V8 |
| Body and series | Custom or Custom 500 and the body style |
| Sequential number | The build number unique to the car |
On a car this old, matching the number on the data plate with the title and any other stampings is the first check worth doing.
How a Ford Custom is identified
This Custom spans the change to the modern VIN. A car from the 1981 model year carries the seventeen character VIN, which begins with 1FA on a United States built Ford passenger car and gives the model year in the tenth character. The earlier cars, up to 1980, predate that system and instead are identified by an older Ford number, a shorter code stamped on the car and set out on the door data plate, where the first character is the model year.
What the old Ford number tells you
On the pre 1981 cars the stamped number and the data plate together record the model year, the plant, the body style and the engine. Because there was no single national standard yet, the exact code letters change from year to year, so restorers translate each field against a year specific Ford chart rather than reading it straight through like a modern VIN.
Where to find the number on a Ford Custom
On the 1981 cars the VIN reads through the windshield at the base of the glass on the driver side and repeats on the door jamb label. On the earlier cars look for the data plate on the door or door pillar and the stamped number on the body. On any car of this age, the plate, the stamped number and the paperwork all need to agree before you buy.
A short history, generation by generation
From 1965 the Custom and Custom 500 were the entry full-size Fords, sharing their bodies and engines with the Galaxie and LTD but with plainer trim, which made them favourites as taxis, police cars and no nonsense family transport. The cars grew and restyled through the late 1960s and early 1970s with the full range of six and V8 engines, and after the line was dropped in the United States the Custom 500 carried on in Canada until the early 1980s. The table below sums up the eras.
| Generation | Years | Body | Key engines |
|---|---|---|---|
| Ford Custom mid-1960s | 1965 to 1968 | Sedan | 240 six, 289 to 428 V8 |
| Ford Custom early-1970s | 1969 to 1972 | Sedan | 240 six, 302 to 429 V8 |
| Ford Custom 500 (Canada) | 1973 to 1981 | Sedan | 250 six, 302 to 400 V8 |
Ford Custom engines and specifications
Because the engine code is part of the number, a proper check confirms the engine the car was born with. The figures below cover the main engines, with power as a range because output changed across the years and the way it was measured changed too.
| Configuration | Years | Power | Layout |
|---|---|---|---|
| Ford Custom 240 and 300 six | 1965 to 1981 | about 150 to 170 hp | Inline-6 |
| Ford Custom 289 and 302 V8 | 1965 to 1981 | about 195 to 220 hp | Small-block V8 |
| Ford Custom 351 to 400 V8 | 1969 to 1981 | about 150 to 250 hp | Windsor, Cleveland and 335 V8 |
| Ford Custom 428 and 429 V8 | 1966 to 1972 | about 320 to 360 hp | Big-block V8 |
Ford Custom by model year
Buyers searching for a specific year want to know what they are getting, so the table below maps several years to the era and engine. Cars before 1981 use the year digit, while the last Canadian cars use the 17 character VIN.
| Model year | Identification | Era | Engine options |
|---|---|---|---|
| Ford Custom 1966 | 6 | Mid-1960s | 240 six, 289 to 428 V8 |
| Ford Custom 1970 | 0 | Early-1970s | 302 to 429 V8 |
| Ford Custom 500 1975 | data plate | Canada | 351 to 400 V8 |
| Ford Custom 500 1979 | data plate | Canada | 302 to 351 V8 |
Reliability and the things worth checking
These are simple, robust cars by modern standards, but every survivor is old now, so condition and originality matter far more than mechanical complexity. The most common points to check are summarized below.
| Engine or area | What to check |
|---|---|
| Ford Custom V8 | Durable and easy to service, confirm the engine matches the number and check for overheating |
| Ford Custom six | Tough and simple, check for general age related wear |
| Ford Custom former fleet use | Many were taxis or patrol cars, so check for hard, high mileage use |
| Ford Custom body and frame | Rust in floors, frame and lower panels is the main enemy on survivors |
Buying a used Ford Custom
When you find one worth pursuing, read the number first and make sure the model year, engine and body line up with the seller’s description and the title. Check whether the car had a hard fleet life, confirm the engine through the data plate, and inspect the frame and floors for corrosion. When you are ready, enter your Ford Custom number in the decoder above, then use the advice here to make sure the car is genuinely what it claims to be.