[JoeC]

Throw the Herd book in the garbage. It is well known by Chevelle people that it contains many mistakes. NASCAR approved engines whenever they wanted. Sometimes they required 500 engines to be sold to the public but did not have to be in the same body as the race car. The Ford 429 was approved by selling 429 Mustangs. The 1963 Chevy 427 Mystery Motor was allowed to run for a short time even though it was a prototype. NASCAR allowed the Chevy guys to run a 427 in 1965 even though there was no 427 in 1965. The 1965 L78 396 block could take an over bore to make 427cu.in. and was raced this way in 1965. A very interesting story developed from 66 to 68 with Chevy, Smokey Yunick, NASCAR, and 3 radical 1966 427 Chevelles.