178 MPH (if I recall correctly) at Brainerd International Raceway in 1983 in the Pro Stock Camaro I was crewing on. This was a test and tune weekend.
Approximately 140+ MPH in my 1969 SS427 Impala Convertible with 2:73 rear on a dry lake bed in California sometime in the late '70's. Talk about no effort power steering at those speeds. Also not a good way to stretch the top...........
