Technical Piston identification needed

Anyone have a old Sterling piston catalog? I have a set of pistons trying to ID what they are.

Sent from my E6810 using The H.A.M.B. mobile app

 

Here's a bump for ya.....

 

Just based on the writing on tbe box...id guess 371 Olds....030 over. The HC might be high compression....

 

Pig-in-a-poke? Why did you not show the piston?

Ben

 

I will get a picture when I head back to the shop. Black Panther compression height is wrong for a 371 checked that already. My buddy has had these in his shop for at least 20 years. Doesn't remember where he got them

Sent from my E6810 using The H.A.M.B. mobile app

 

measure the diameter too, let us know.