318 la head vs magnum head swap help

My guides have been milled down, too, FWIW.

my bad, i didn't think you had any guidework done.
also i might be running a small shot of nitrous on this motor later on. a max of 100 shot, just depends on what it runs on motor. do you think it will last with a small shot every now an then? i have a few other cams too, i'm probably not gonna beat the xe 268 i already have, but i just wanna make sure i cover all the bases on that subject. whats your oppinion? one is a "power adder" cam from crower, designed for small blower or nitrous. its a straight pattern, 227/227 @.050, .467/467 114 lsa, 2000-6000 rpm. it will probably run like **** on motor, then pick up a lot of e.t on juice. then i have a old school crane 272 energizer 218/218 @.050, .454/.454, 2000-5000 rpm. i know its old school and kinda small, but i would rather be a little undercammed and have a smoother idle and torque, than overcammed and sound great at idle, but run like dog **** thru 1st gear lol.