[F'in mine]

Originally Posted by JKnight

Rick’s Restomod tank was paired with a ZL1 Camaro fuel pump and corner pickups (because…why not?) and a Vaporworx controller to make the fuel system as reliable as possible. Also added a fuel vent canister, which does seem to be keeping the fuel smell to a minimum, but I did have an unexpected amount of fuel coming out of the vent when fueling up the car this weekend. Not sure what that’s about. Anyone have any ideas?

Re: Fuel coming out of the vent, I noticed that you're using the LS3 or ZL-1 pump and sending unit all in one rather than the separate sending unit.

Some possible things to check.
Vented cap? Some of Ricks newer tanks have the new style screw caps that I believe are non-vented. I had to try a few reg. vented caps until one that worked properly.
The vent line in your pic looks to be tucked under the fuel feed line, I would get it up high as quickly as possible, maybe you did?
Maybe you over filled the tank and the trigger didn't get activated to stop soon enough. I try not to over fill and listen as I fill up.
The hoses going to the vent canister are in the right ports?
Gas coming from the in ground gas station tanks is cooler then pumped into vehicle gas tank will expand somewhat.

I added another tank vent boss on my filler tube at around the 1-2:00 position to help with the venting, hoping it helps and no issues so far.