711" BBC, "VERY OLD" Old's Pro Stock Heads, Two System's, with a TH-400. Weigh's 3495 and the best it has run is a 7.74@163 I think, Here a video. We don't count this run, it started to eat itself up at the 330' and he shut it off at about the 1000'. It runs like a braket car at 8.20's on one...