need some help engine casting numbers under alternator are 1CG112 or 1CD112 is a partial vin so hand stamped hard to read.

 

The stamped partial VIN number on the pad in front of the passenger side head won't tell you anything. It's only good if you're building a "numbers matching" car. You'll get a lot more information from the stamped suffix code.

The partial VIN is also only the last 9 digits of the 17 digit VIN so I guess it could give you a year from the code.

What you listed looks more like an engine code but isn't complete. The 1 and C I have no idea but it's possible your G112 or D112 is actually 0112 which would be January 12.

Is the 1C maybe a K?

There should be 2 or 3 letters after the 112 which would be the suffix code.

 

without moving my alternator i noticed there is a h before x amount of numbers couldnt really tell will look tomorrow and when i changed my manifold out i noticed there were notches in the block my dad was sayin something about those were only pre 70s blocks reason why i was saying partial vin was it was hand done it looks like faded on bottom wll take a piece of chalk to it and take a picture and post see what u guys think

 

sorry for the jump around lol

 

only thing i got from it was 1GD1121

 

No help at all. You're going to have to go by the casting number on the bellhousing to get a ballpark idea on the block. Without a suffix code, you can't pinpoint to the exact origin of the block.

 

I am having an issue finding out what motor I have as well. I have an 87 Trans Am which originally came with a 5.0 (noting from decals and also the VIN) However I was told that a 5.7 350 was dropped into it. After locating the casting numbers behind the head one drivers side it says GM 5.7LG SGI. So I have that, now I am trying to find out what the motor cam out of. The numbers behind the alternator read V12040AN with a (literal) partial VIN of 47, the rest is smooth. I have searched all corners of the internet and can't seem to locate "0AN', "OAN" or "AN" please help!

 

Stampings can be very difficult to read at times. OAN isn't a good suffix code. I tried to find something that would look similar like CAN but still can't find anything.

 

I have a picture and I can say that's what it says without a doubt lol it's very clear, which is why I'm so confused...

 

Don't worry about it. Unless you're building a numbers matching car, the codes don't mean a whole lot. Once the engine gets rebuilt, it's not original any more. If the block ever gets decked, all those stamped numbers will be gone.

 

I now am actually trying to find out the year. Reason is because I'm taking the Qjet off and putting on Edelbrock intake and carb, in decided on what to get I have found a huge list of intakes that go on certain years of the 350.. This car is so much fun to get right

 

Only relates to the head style , so identifying the block year is no help.
If you have cast iron heads with centerbolt covers then you need '87+ intake.
If heads have reg perimeter bolt covers then need '86 and earlier intake
The only difference between the two styles is the angle of the 4 center bolts so if you get a killer deal on the wrong type intake you can just file out those 4 holes to suit your heads

 

No how about finding out what kind of car the motor came out of? I am looking to get a reman Q-jet but it needs to have the throttle position sensor and mixture control solenoid connections and I am getting a lot of different options with a lot of different prices (ranging from $260-$600)

 

For that purpose, the year of the motor makes NO DIFFERENCE WHATSOEVER. All of those types of things are dependent on the CAR, not the ENGINE. Just get the roght carb for your car.