My 70 roadrunner complete car with bench seat and air grabber hood went 8.20 in the 1/8 mile with a stock 400 shortblock with 120k miles on it. It had 906 heads with fresh valvejob and had been cut .030. The cam was an old erson .471 lift. I had a coan 4000 converter and 3.23 gears and wore out pep boy radials.I always wondered what the thing would run freshened up with some compression.