Carb or ignition ?

missed it by 2 and 2,lol

your other numbers; int/comp/power/exhaust, are;
274/115/ 97/282/54 o-lap,50Effective/ Ica of 65* @108 installed
270/115/112/276/53 o-lap,50Effective/ Ica of 65* @107; My 223
276/115/104/286/61 o-lap,60Effective/ Ica of 65* @110;My 230
@.050, the numbers are;
221/229/112 yours
223/230/110 my first Hughes
230/237/110 my second Hughes

The numbers in blue tell a little about fuel economy; the bigger the better.
The Effective overlap tells a little about the shape of the powerpeak; Smaller numbers point to a broad flat curve. Bigger numbers point to a more narrow,peakier bulge.
All of these have a fairly to very mild lope at 750rpm, altho yours will have a lotta energy still in the exhaust, shown by the rather small 97* of extraction. Whereas the 270Cam with 112* of extraction, made super hiway mileage.