Any idea what works to get rid of this?

aircraft stripper?

aluminum polish

mothers aluminum polish and fine steel wool.

seriously, that stuff works great

try some white vinegar and scrub with a old toothbrush, wash off with plain water.

send the intake back to China and tell them to GTFF. but something NOT made with Chinesium.

Use a dremel and polishing wheel lol

wtf? It's an Edelbrock intake with a big fat MADE IN THE USA stamp on it. The rust is from a few years ago when I was going to use a hood scoop..I never removed the filings when I cut the air cleaner hole in my old hood.

Naval Jelly rust remover ...i bet that would work best with less scrubbing

wheel acid.

buy a couple of intake gaskets and take it off and have it bead blasted

paul??? of all people? i thought you wouldve known a way to do this. lol. but all the suggestions here seem to make sense. one of em has to work.

Mark just like someone who went to automotive school would actually be knowledgable about vehicles lmao

i know stuff. dont know how much, but i know stuff.

when rust used to drip on the fuel tanks of the peterbilt i used alcoa spray gel, not sure how it would work on a porous surface like the intake, but it worked great on the tanks.

wire brush and a can of WD-40 sounds gehtto but the shit works as long as it's not polished then obviously use a polish lol

The intake is just a rough as cast finish, it's not polished.