My pump gas 518 with the Eddy low deck dual plane six pak intake with a set of 1970 440 vacume carbs modified by C&J engr. has gone as quick as 10:34 at 128.6 MPH running out of fuel from the hit of the throotle to the finish line according to the LM1 wide ban I put on it. That is with me in it at 3450 Lbs and with the air cleaner and mufflers on it I fixed the fuel delivery issue and then broke a roller lifter before getting the AFR perfect I loves six paks carbs systems BB Mopars love all the air you can feed them