750 Brawler vs 650 AVS 2 at the track, right OOTB !

Rat Bastid said
And yet, he didn’t look at a plug, didn’t pull both carbs down and look at the tune up.

Are you surprised? Irrespective that's a large difference in available airflow.

318willrun said
It did not. It also did not help the 60 ft time nor the overall ET either

Best MPH isn't it always quoted as the power the engine is making so.....

mopowers said
Out of curiosity, I looked up the venturi and throttle bore specs of both carbs.

The venturis on the 750 Brawler are 1.38" on all corners and the throttle bores are 1-11/16" (or 1.6875").
The venturis on the 650 AVS2 are 1.19" primary and 1.63" sec. Throttle bores are 1.40" pri and 1.75" sec.

After some quick math, the Edelbrock 650 actually has a larger total venturi area at 6.40 sq. inch vs 5.98 sq. inch for the Brawler 750, whereas the Brawler has a larger total throttle bore area at 8.95 sq. inch vs 7.89 sq inch for the AVS2.

Did you factor in booster restriction in your calcs? If you have ever pulled down a Carter/Eddie carb and looked at the booster and compared it to a Holley downleg you would understand what I'm talking about. Add to that the fact that the primary booster in the AVS is annular in design then its even more restrictive again.