Head identification 8K28 ???

[screamin reel]

I figured out my engine is a 5.0 from an 87 Bronco #E7TE
I'm trying to figure out if these are the stock heads or not. All I can find is 8K28 on the inside as well as a large T stamped in the heads.
I can't find any #'s on the outside.
I can't seem to find anything anywhere on 8K28
Is there somewhere I can find out what I have ?:-[

 

[broncnaz]

I'd think that they would be E7 heads also if I remember right the casting number is on the bottom of the head you cant see it while installed.

 

[NoJoe]

x2, The T meaning truck, E7T= 87 truck.

 

[fordtrucks4ever]

The heads you want to find are E6SE AA and E7SE. These are stock for the cars and some HO motors. Higher compression than trucks. They have the heart shaped chambers. The numbers you have are casting dates. The heads you most likely have are E6TE-EA. They were used for several years.

 

[screamin reel]

Thanks
We'll see what we can find