Can anyone give me the thread depth on a edelbrock intake?

They very in depth, but its carburetor and we aren't torqing it 40 lbs.
bottome thread of 3/8 or so long, idk, and a top thread, shoulder space included , of however thick the forementioned items plus carb and 4 threads is good.

Just buy under "carburetor mount studs" and choose 2 " long.