Carb CFM.. Increase?

I will go the opposite, ran my 383/509 cam engine with 4:56 and 3800 stall with a heavily tuned Holley 750DP for years and happy. Mainly strip use.

Went the other way for the street, dropped to 3:55 and went up to Eddy 800AVS Thunder. Car launches as hard and over all drives just as well with better throttle response and drive ability. Plugs look better as well.

Nothing changed in the setup but a higher gear ratio. All stock 69 a-body 383 exhaust in both variances. Single plane Eddy TM-6 intake.