Stock cam 360 idles bad, dies in gear, fixed!

18* is too high for a stockish cam, i'd check the manifold vacuum & see where its at, you may have a vacuum leak causeing a crappy idle, my cam is a 218/218 @ 50 on a 112 LSA & it holds 17 inches of vacuum in gear, timing is set at 10* int. & 30* total, now this is a magnum, I would'nt start blameing the gas, are pump gas is mixed & i'm running on 87 octane & it runs great, something is not right with your tune, or you have a vacuum leak or like said, the pre-load is too much.

dgc333, i disagree with what you said, i know 1st. hand how an engine will react (at idle) if theres too much pre-load on the lifters, it will keep the valves open & cause low vacuum, normal preload is between .020" & .060", if you exceed this it will cause problems, standard style lifters can/will bleed out under high RPM, thats why they make "anti pump-up" lifters that have different valveing & a stronger clip so you can run them at 0 pre-load or slight pre-load.