(Edited) This is a ....."factual"..... discussion! If there was "extensive research" done, some of it should be available for you to post online to back up what you say about the 305 and other stuff.!
Westlake heads were used for Chrysler's Indy effort and by the Rod Shop in one of their Gas class Colts. Not legal for Nascar or Trans Am racing.
Nascar 305 w/production type heads.Much more info is available online on the 305 applications.
I don't mind learning something new or getting errors corrected, IF the information is accurate. Not trying to get political, but here is too much of history being erased or changed as it is. Please confirm your info.
Yes Westlake heads on Indy motor effort.
There were one off “cheater” “developmental” heads made for the T/A program. Look at the Hot Rod picture posted. Big exhaust ports. The intakes look square-ish. Not sure if they raced with these heads as they don’t match the FIA port spec diagrams/measurements. These may have been a early developmental head. Early Gurney drawings show the large port. Later Gurney drawings show a production port.
I think there was a member here in Wisconsin selling a set of these T/A program heads... with a casting number like no other head.
Ed Skanes restored, owned, vintage raced a Gurney AAR and (2) Posey T/A’s. We writes here about these large port cheater T/A heads with factory casting numbers on them:
https://www.transamcuda.com/cgi-bin/yabb2/YaBB.pl?num=1148593813/45These square port heads do seem to have been used by the 71 Daytona.
Could also been used by the1971 Questor Grand Prix Formula 5000 car driven by Swede Savage.
