Saw the fella again today. Sounds like we are going to have lunch next week. Maybe we can make a deal. I will have to check them out first, but would be shocked if they weren’t what I think they are.
I would love to have pictures of the heads, in my shop Pat. Going to do my best to make a deal. Not sure what they are worth, but they were running on an engine that broke a piston, and that is why he quit running the motor.
Guy came around again. We may have a deal on the heads. Actually the whole motor. I am going to go check them out again to make sure they are the real deal. Boy, it has been a long time coming.
As I understood Chevrolet built some FI 283’s with the aluminum heads in 1960.
They cracked and leaked so bad Chevrolet had them replaced with cast iron heads.
That might have been what you saw.
Digging online several authors say the first factory aluminum factory SBC heads were 1986 L98 Corvette 14101128. I looked in several different listings too.
Also production line aluminum heads...
1999 and up....12367713
1997-1998 LS1...12558806 (Gen3)
1999 LS1...12559553 (Gen3)