tryin to break in new engine, ruff idle

Yeah that intake is for high stall, 4.10 gear cars and its not thought of as one the best eddy intakes. It is low profile, a big draw for those with limited hood space.

I still think you could get it to idle fairly well--if the intake isn't leaking. Its too lean, just why. Its unlikely but if tighten too tight you can split the intake gasket.

You sitting down, lol, different carb, different intake..ebay or fabo sell both, get IMO a older eddy intake or those rpm, the new performers intakes aren't so great...and carb, like others said, an older holley or Carter

Bucks down, just try different carb, still isn't night and day difference then pull the intake and check for a bad gasket--unlikely but would cause a big vacuum leak..

I recall long ago, had nothing to do, thought I check my intake bolts to see if they are all tight, how I split the gasket and found out first hand. I now use only steel core intake gaskets, fel pro makes them around $40, i know, stuff is overprice..I drill a small hole for the intake exhaust heat on each side. I believe in warm intakes. That intake you have now has exhaust heat ports, I hope they are open, only in hot weather--90 plus--you don't want intake heat, IMO