Sump capacity of gas tanks on Formal NYB’s

Mystery question of the day…

Recently, I had put in 8 gallons of gas in two parts while installing and setting up my Holley Sniper on my 1978 NYB. Tank was bone dry due to new in-tank pump and sender install.

Replacement sender was a match for original as to float movement, location and orientation on install.

Assuming we burned half of that 8 gallons while working on the system and sorting other issues, it still showed empty throughout.

So…. Does anyone out there know the actual sump...

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Author: 73 T&C