I guy at work has a 454 Chevelle with 4.10's and nice sounding cam. Dont know all specs on the eng but his best et is 12.70's @ 108. He told me last week he is putting some spay on it this year so now he will beat my 63. I told him he needs 11.40's to be in the ballgame and that I will still beat him even with him on the spray. I honestly think it should run much better as it is right now but he does not know alot on tuning his combo. I guess we shall see this summer. Ron