Nice articles that show some of the confusion of the early Camaro and how things were changing quickly in late 1966.
I am always looking for articles on the early days of Camaro racing
Those articles are from 1966 as they don't mention the 302 and don't mention the Z/28 and the Penske/Donahue team.
The "302" was called a "301" in the late 1950s to mid 1960's and even in 1968 in this article about Traco. Some were racing the 283 Chevy bored out to 301 and it was a great racing engine , even running in Indy cars.
"Chevy's little 301 Giant"
Those articles mention the Dana/Yenko deal where Dana was going to sell the Yenko Stinger and Yenko was going to sell the Dana 427 Camaro. This changed and Yenko did his own 427 Camaros as we all know today.
They also mention that Nickey was going to do a 427 Camaro drag racing deal but Nickey cut back on their racing program and I don't think they made the 50 cars required by AHRA for Super Stock.
This task was then given to Yenko to produce the 50 427 Camaros needed to make them legal in AHRA Super Stock. That was done and working with Dick Harrell the Yenko sponsored 1967 Super Stock Camaro was an early record setting drag car.
Yenko and Dana built and raced early 1967 Z/28s but the success of the Penske/Donahue team gets most of the limelight today. (as they well deserve)
interesting early Camaro racing history