Need help identifying my pistons

[5.0calypso93lx]

I was told that my engine had Keith Black hyperjunks in my 306. I got the engine down to the short block today, and pulled the pan. I was told that I wouldn't be able to tell the part numbers for the pistons because Keith Black puts their numbers on the side of the pistons. Well these pistons have numbers on the top of them, and they are black on the sides when looking through the oil pan with this "pacman" looking logo on them. The numbers on them are H273CP .030 . Then below the notches is 108-01-13-A.

They also have pretty big notches in them, I'm thinking that I'll be fine with 1.7 rockers with this trick flow stage 1 cam. Here are the pics:

http://img2.putfile.com/main/1/2016190131.jpg

http://img2.putfile.com/main/1/2016190247.jpg

[facemelter71]

They look like a set of speedpro pistons i have.

[5.0calypso93lx]

They look like a set of speedpro pistons i have.

Thats exactly what I thought, because of that logo on the side. I could have sworn I've seen that logo associated with speedpro before. :confused:

[5.0calypso93lx]

Found em':

http://store.summitracing.com/partdetail.asp?CP=1&part=STL-H273CP30&N=700%200&Ntt=STL~H273CP30%20or%20STL~H273CP&Ntk=&rsview=sku&Ns=

Yep, they're hyperjunks...

[TONYT]

i need to send u an aricle on a 400hp 306 based on just what u got there,be worth looking at while u got it tore down, if so shoot me an email

[ClevelandMstang]

Don't forget to check valve clearance.