pump
i did some checking today with summit tech line they told me not to use the m55 the good numbers were m55a hv or 10553 melling some biulders are still not aware of this i have a 406 sbc with 18 degree heads that dynoed 754hp and 620 ft lbs of torqe thank god i havent made a pass with it yet because it has the weak punp in it easy fix now just drop the pan and change it dont really like to use high volume so i think ill go with the 10553