73’ 318 dies under accel with new intake & carb

I've put four different Eddy carbs on two different engines.

A stock 1976 318 and a 1969 440 with a mild cam upgrade.

The 318 got a new in the box 600 cfm and then a 625 AVS.

The 440 got a swap meet 600 and then a 750.

All of them ran and ran decent after just bolting on.

The swap meet 600 on the 440 had the accell pump issue which was very easily fixed by taking it apart , soaking it, and blowing it out.

After that it ran well but lean surged, and that's when the 750 went on.