Re: 1940 8 cylinder engine ID no firewall plate
Posted by HH56 On 2023/5/1 21:49:57
Also a welcome and as Don said, a few photos showing various angles will help others identify the model and confirm the year.
The number stamped on the motor just under the head is the official motor number and may help identify the year providing it is the original engine. The larger number and date cast into the block just above the oil pan is a casting number and date block was cast in the foundry. There is also a casting number on the head. Both of those casting numbers are of very little use since it just identified the raw casting before any machining was done.
The vehicle number which would have been on the missing plate is the official number. Depending on the state where registered that number or the motor number were used for registration purposes. With it missing your state may assign a number or some inspectors have used the large embossed number on the firewall. Surprisingly that is the only number on the car which is not removable yet was not used for anything outside the factory. Most records of the number have also been lost to time.
Here is a list of 39-41 motor numbers. If the car is a 40 and still has the original engine the motor number will start with a C. Except for the sixes, the CID and model engine was installed in is determined by the second number
Attach file:
motor number.jpg (258.38 KB)
The number stamped on the motor just under the head is the official motor number and may help identify the year providing it is the original engine. The larger number and date cast into the block just above the oil pan is a casting number and date block was cast in the foundry. There is also a casting number on the head. Both of those casting numbers are of very little use since it just identified the raw casting before any machining was done.
The vehicle number which would have been on the missing plate is the official number. Depending on the state where registered that number or the motor number were used for registration purposes. With it missing your state may assign a number or some inspectors have used the large embossed number on the firewall. Surprisingly that is the only number on the car which is not removable yet was not used for anything outside the factory. Most records of the number have also been lost to time.
Here is a list of 39-41 motor numbers. If the car is a 40 and still has the original engine the motor number will start with a C. Except for the sixes, the CID and model engine was installed in is determined by the second number
Attach file:
motor number.jpg (258.38 KB)
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