[Dominik]

Dan Case is typically your best resource. I had a similar inquiry for an aluminium block Chevy Small block. As it happened I bought this book, and the author confirmed:

Chevrolet-racing ...?: Fourteen years of raucous silence!! Hardcover – January 1, 1972
by Paul Van Valkenburgh

Same book MIGHT mention Ford as well, being the competition in those days. But I cannot access it for a few months.

A good read either way, just a bit pricey on Amazon.