I have read this and am very perplexed! My Valiant Charger with 410 when I first ran it at the drags with those radial drag/street tyres I was dropping the clutch at abot three or four thousand revs and running around 12.1 . I then did a run just dropping the clutch at about twelve hundred revs and it ran a 11.7 straight away. I learnt that the engine had enough torque to pull out of the hole with just dead hooking it and from then on would run 11.7s all day long!