I have run 6.38 at 107mph with my 64B body at 3080 with driver. I used a .055 over 440, a 620-MP cam, a set of E-heads shaved .060 and a set of Rross 14cc domes at 0 deck, and 950-HP on a victor intake. On leaf springs. It dont take mutch. Go to my web site fo more info