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My cam is about as big as Isky generally uses in a daily driver situation and has served me well for over five years. After my 9-sec pass, I decided to change out the springs and the old ones were somewhere around 220-230 on the seat and 480 open and I drive it a lot and had several passes at that time. I swapped to a stouter spring and it`s still goin strong w/240-250 seat and 540+ open. I`m not the consertavite type and am of the "bigger is better" theory and so far have proven it can work well.



Just curious what the specs of your cam is??