Carb advice?

A regulator will not help. A regulator is fitted if you have too much fuel pressure. The 1406 600cfm carb is good to at least 5500 rpm for a 360 with the cam specs he has. The draw back with these carbs is that they run leaner in the idle mixtures than Holleys. This is why people cannot get the:

-off idle stumble out
-surging at very light throttle
-idle to main transition hesitation
out of the engine when they install these carbs on thier cars.
O.k. they do work right out of the box if you have an engine that can give a high signal (vacuum reading) at idle, but when you have a performance camshaft in your engine the 1405 carb is better and still might require modification.
I just found a solution to my 1406 problem. Although richening up the primaries helped with the surging, the idle to main transition was still no good no matter how rich you went in the primaries. The only solution is to richen the idle circuit. I know you guys are no going to like this but the idle jetting needs to be enlarged by a very small degree to get a smooth idle to main transistion and bring back drivability to the car.
So I will tell you what I did:
According to the carb manual I went to step #19 on main jets. This I reduced to step #23 but I also drilled out the idle jets in both main venturis from approximately 35 thou to 40 thou. I still needed one step richer jet in the primaries. Even the Q & A's on the edelbrock web site state this also. (I was still getting slight detonation at moderate throttle openings)
With the richer idle jetting and after readjusting the idle mixtures, The car has not felt so great with a Edelbrock carb. As people has mentioned before they threw thier eddeys away and have gone to Holley. I was one of these people.
I have tried:
-Carter 625cfm
-Carter 750cfm
-and this 1406 Eddy
and they ALL had the same caracteristic!
I was very reluctant to drill the previous carbs so I stayed with Holley with good results. But I was so desperate to get this one right.
I like the carter design. It starts easier and idles smoother with a radical cam spec.
I would recomend to drill VERY CARFULLY the idle jets 2 thou at a time and test the outcome. You will need to get one or more precision drills from a machine shop or somewhere else who might have these drills.
My engine is a 360 with a Comp cams xe274H, 10.4:1 with LD4B maifold and the eddy 1406 with mods.
So far so good.
Soory for the long story.
Hope this helps.

Regards
Billy D...
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