What are these pistons?

[subboz]

So here is the the skinny.
1976 vintage 360 rebuilt 5+ years ago by previous owner(pill-popping tweaker)
974 head w/72cc chambers looks like a refresh on heads but cant be sure. Looks to be .030 bored since thats what on the piston.

This is the pistons that are there. Trying to get rough idea of CompRatio and some identifier for these pistons.

 

[snakeoil24]

you have to cc the heads and the piston at tdc then down ten to figure compression.

 

[RustyRatRod]

Those look like the 1971 360 replacement pistons. They had a higher compression height than all the rest. Like snakeoil said thoug, best to measure it to be sure. You'll probably have no more than 8.5.

 

[subboz]

Those look like the 1971 360 replacement pistons. They had a higher compression height than all the rest. Like snakeoil said thoug, best to measure it to be sure. You'll probably have no more than 8.5.

Thanks Rusty never thought about 71 replacement slugs. Im not gonna mill the heads, block or replace the pistons so it was more of a ballpark question. CCing the piston and head is pointless to me at time.Sometimes you can get a +-CC in piston or CR based on bore size.