318 t/b swap onto 360 carbed

Mark Nixon said
Drop to a 600 CFM vacuum seconday carb and you will help torque and maybe gain a mile or 2 in mileage.
As you stand right now I'd say you aren't going to get a lot more mileage out of it, but I could be wrong.

What gears are you running? A 360 can handle 2.76s in an A body without lugging it.

Mark.
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Its has 3.55's with a 225/70/15.

I swapped the holley out today for a carter competition series i found in the trunk the previous owner removed from the car. CAr feel much more peppy now and seems to get better milage so far will take a week to see if there is a gain .