3/8 vs 5/16 fuel lines

If the carb was running out of fuel it would most likely start popping and sputtering from a lean condition .

I had a 73 340 4sp Dart Sport with W2 and a solid roller that would run like a champ until I bolted slicks on and ran it down the track . It would sputter and pop on thetop end .. guys were telling me I needed 1/2 fuel line ..lol
I said if the roller cammed 440-6 in my Charger can run with 3/8 this small block certainly can .
After months of chasing the issue I found the line coming out of the tank was kinked while I was swapping gears one day .