Noticed no difference putting around town, idling at a stop sign, or cruising down the highway. But under WOT the 750 always offered more, and not on just one project, but all of them. Even when my 360 had stock heads, stock exhaust manifolds, 2.45 gears, with the stock converter, the 750 DP still ran the better time and HERE IS THE KEY - the better 60 ft time as well compared to the 600 edelbrock. Both carbs worked flawlessly without a hiccup. Both ran great, one just performaned a little better.