if i had a 3 barrel i would 20 lb sledge it.but no it's a 950 holley hp double pumper. i think i need to upgrade cams . im not happy with a 256 266 @ 50 with 625 lift solid roller i should just throw in a 278 280 645 645 on a 108 solit flat tappet and be happy but i wanted to try my first full roller and it was free to use so it went in . thanks for the advise