I’ve got a C4OE-6015-C 289 block that I’ve had for about 25 years. The code is cool because it’s an early 5-bolt that could be used as a Hi-Po restoration (don’t know it’s history, but it’s right for a K code). BUT! The really cool part to me is that the casting code is 4D17!!! That’s right...

Hi all, I’m back on the forum after a VERY long hiatus raising a family and such. So I’ve got a C4OE-6015-C 289 block that I’ve had for about 25 years. Amazingly, in that time, I never looked up it’s casting codes. Well, obviously I did now, and I think they are incredibly cool! I’m a Mustang...