Vortech "supposedly" tested at 13.8
I have ran 13.2 on a G-tech pro, it also figured my FWHP to be 273.
When I dynoed I pulled 274.4FWHP. (pretty accurate if you ask me)
My step brother have a 5.0 w/ gears, headers, intake, etc... and has plenty of high 13 sec time slips. I have raced him 3 times now and have been able to pull 2 car lengths on him by the quartermile mark each time. (on the street) All have been been about 108-110mph (as indicated on the speedo which could possibly be off a minor amount)
-Mark
