LA360 compression

is it possible that someone put KB stroker pistons in your 360? if they have the deep eyebrow valve reliefs and are 100 down in the hole that would give you 200 valve clearance.???? that would make me suspicious. Back story is , many of these pistons were installed in crate engines with the recommended .26 top ring gap. over the years , it became well known that the iron headed strokers developed so much heat on the piston tops that the ring gap closed up. and created "muffin tops", as the ring would jam and break off the tops of pistons. All the engine builders round here have sets of 6 or 7 of these pistons as this was a fairly common failure.( i have 6 .40 over myself). if someone had a collection and built "econo " short blocks???