.....I used to run a Holley 750 double pumper on my 413 small block although I had a MUCH smaller cam. 222/232. This motor is being rebuilt now & the carb is being rebuilt at The Carb Shop in Ontario, CA. It sat for years so I'm having them rebuild it. It used to work great on the street except for it 'stumbled' {hesitated} coming out of the hole. The place is addressing this. But it idled just fine before..... Bill
Oh, I'm using a bigger cam this time, either 230/230 or 236/236.....