No bad - just Chevy puts "bowtie" on a lot of stuff
GMPP sells Bowtie Vortecs in two sizes - "small port" 185cc under P/N 25534421 and "large port" 225cc under P/N 25534446. Both heads have 2.00/1.550 valves. It takes either a fair bit of RPM or a fair bit of CID to use these heads, so they'd be targeted at a 450+ HP 355 for the small ports, and a 500+ HP 400+ for the 225s.