The discussion about how fast a stock 340 was is always interesting. As a very long term owner of a 1968 Formula S Fastback, I can state that 13.5 @ 105 is doable with a stock engine. My 'Cuda was purchased from the original owner in June 1969 while I was a junior in HS. I raced it in stock form at OCIR, Long Beach, Irwindale and other SoCal tracks. I had 350 timing slips on the car by the time I put 60,000 miles on it. All were in the 13.60 to 13.50 range with a best at [email protected].