Can I put an Edelbrock LD340 intake on my 1985 dodge w150 that has factory air conditioning? I dont want to tear it all apart and find out that it wont fit.

It will not work!!!!!!!!
Send me offending manifold and save yourself the aggravation trying to make it work

Depending on which ac you have (don't remember when the pump switch was made) the LD340 will work with the older AC bracket. It is drilled and tapped for AC.

I have that intake on my 360 and love it.

No it won't fit, you can run a torker II, standard performer, make a custom bracket for the compressor or take the A/C off- I ran into this on my 86 when I swapped in a 360 with an RPM Air gap, I had a performer on the 318 that was in it before and the A/C fit fine.