When I worked at GM Research, starting in 1986, I found and engine on an engine stand up in a loft. It was a 1967 GTO 400 with 670 heads and a handle and a bar going over the rocker arms. My dad told me they were experimenting with variable valve timing and by moving the handle fore or aft it would vary the timing so many degrees. He said it could idle smooth as glass at 400 rpm. There were a lot of interesting projects GM Research always had going on.
|