Small block heads with no casting numbers

RustyRatRod said
The piston head is not where clearance is measured. Don't sweat seeing the top rings. The piston SKIRT is where clearance is measured. Those also appear to be either heavy duty hydraulic, anti pump hydraulic, or solid lifters. I think you did real good! @MOPAROFFICIAL do those look like 2.02s to you or is it playin tricks on me?

Tricks indeed.
Looks are decieving though. The exhaust valves look after market...the intakes look stock. Check out the margin between if you can focus through the rust.