383 Wont Idle with new to me 800cfm DP. Idles and runs ok with Edelbrock/AFB

yellow rose said
Ok. I said spend 8 dollars on two butterflies and drill them out. I realize it's not his carb yet. It's still just 8 bucks and some drill bits.

If I was home I'd send him two for free. But I ain't driving 3.5 hours one way for that. Maybe someone else here has some (I probably have 20 or so of them) and they can hook him up.

You math doesn't work. If he is going to spend any more money that what this carb is going to cost, plus two butterflies, he's better off buying something with removable brass. Used that's about 400-450 bucks.

So a friend gives you a carburetor on the pretense that you're going to try it and you start buying parts for it and drilling holes in it and then decide it's no good and give it back? I reckon when he starts drilling he's pretty committed to making sure this thing's going to work perfectly for him. All I'm recommending just from experience is when something starts going wrong throwing money and internet ideas at it sometimes ain't the answer....