I have 2 /6 engines that I have no idea of the year. I dodn't have the stamped code on the truck engine but do have it for the car engine. the problem is it doesn't start with the normal 280xxxx casting code. can anyone ID these 2 engines?

first engine is
stamped on the milled surface by the coil mount
8W225 6097
and cast on the block is 530-7 089
I can't even find that code anywhere by googling it so is there a list of castings that wre used with these funky number combo's?

second truck engine has
on the cast
338-6? and 41535 I'll need to clean it up a little more to make sure
and I haven't cleaned the milled surface off yet.

here's a link to the pic's of the 2 block castings

https://www.facebook.com/media/set/?set ... 2d1dd50f1e

My last 2 80's slush motors had that casting 530 - (core number I think).


-D.Idiot