My 440-1 headed 572 like I said hit 160 in the 1/4 with a 4.30 gear and 16-32 slicks. I had less than 15 runs on it and was struggling what I found to be a bad fuel pump the day I wrecked it when an oil line broke. So it had more in it. Be interesting to see how close that combo came if it was switched to alcohol for cooling reasons there was a lot left in those heads which I found after. Hmmmmm