Heron head I believe is the name.Used in the past on Chevy 348,large Lincoln V-8's of the late 50's and a bit more recently the Jaguar V12 and Moto Morrini motorcycles.
This type head is supposed to increase mid range torque,that's why Chevy chose it for the 348 truck engine.
A modified form of this head is used on purpose built Nascar Cup engines featuring a very shallow combustion chamber.Probably used to get high compression ratios without a huge dome.
The stock 302 head is a close copy of the 1949 Caddy V8 quench head.A lot is known about quench type heads because so many engines use them
