[markjohnson]

Chevrolet didn't get TH400's sorted out for high performance applications until 1968, most notably the Fred Gibb COPO 396-375 Novas. In 1969 though, you could pretty much get them across the board in everything to 396-375 L-78's all the way up to the King......the '69 ZL-1 427 Camaro. It's also kinda funny to note that if you wanted to go fast with an automatic tranny in a Chevrolet application, companies like Wilcap and Art Carr sold adapter kits to put a Chrysler Pushbutton Torqueflite behind Chevrolet cars. It even came with a neat console/tower to mount the push button panel between the seats in the stock console area. I know of an aluminum front Z-11 car locally here that ended up with a Torqueflite after breaking many 4-speeds.