Topic: C1AE-6312-A crankshaft pulley date code? For 67 390GT or 67 GT500.

[Kyle Zammit]

Hi all,

I have a question about C1AE-6312-A crankshaft pulleys. I havs one of these pulleys and it has a cast number 290 is this means a date code October 17?

Here are some pictures that I found with these 3 numbers cast on these crankshaft pulley's. I have another crankshaft pulley C1AE-6312-A but it doesn't have these 3 numbers and it's has different cast in it. They means Julian Dating non leap years please?

[J_Speegle]

Have looked into what foundry cast those but yes that appears to be the Julian date code pattern. For this part it doesn't help with what year they were case since it covers so many years of car production

[Kyle Zammit]

Thanks for everything.