[MidnightExpress]

I have to clean this up to see the casting date code and I'll check the assembly date stamp once I get out to the shed, before I make that trip, is this the casting number you're looking for? I live in Mn and there's some snow in the way. -Midnight Express

 

[MidnightExpress]

No dice, it's an early '67 May 15 casting with an assembly date of June 17 '67. I may nick-name this engine the dream crusher. I originally bought it from a Chevy guy who claimed it was a 289 5 bolt from a '64 Comet K code, which he sent me a picture the cars VIN and it was, the engine tag was correct too. I was looking for a D code for a Mustang, and the Mercury K code is the same with a bigger carb, (not a K code Mustang)

 

[MidnightExpress]

Opps, engine assembly date might be a light stamp E17, not F17, May not June. Either way, no good for either of our applications.

 

[MidnightExpress]

Yes it is. Appreciate you looking.

There is a date code 6K4 block on EBay currently, item #165302173067, it has a casting code of C5AE-6015-E.

I realize this casting code is the '65 code, but the casting date is 6K4, '66 October 4th which is the month after your last listed date so you may need to take a closer look at the C5AE blocks for your date. The listing unfortunately doesn't have a good picture of the assembly stamp, but it would be later than what your looking for based on the casting date.