The guy shopping for pistons on DSS site says i'm right. I think the problem is semantics, depending on the compression ratio calculator. Wallace wants a negative number for a dome piston, a positive number for a dish or valve reliefs. Any piston that has around five cc's, TO ME, means a flat top with reliefs, whether its listed as (-) or not, so i assumed the -5 and -16 were both minus'ing chamber volume.
