How big. Our family dragster had a 572" Low Deck in it, 4.50" stroke and 4.50" bore. GRP rods, raised cam block crower crank Cp pistons. Made 1025hp and we never got to run it wide open with all the timing and the big carb as it was faster than my son is licensed to go. The car was capable of 7.20's in Vegas in the heat of the summer. So we ran it with a small carb and pulled a TON of timing from it.