Edelbrock Universal EFI Sump Fuel On Holley sniper Efi

I purchased a 71 Chevelle with a 454 bored to 468 with Holley sniper efi. It has the Holley spark and hyper spark ignition. Still need to determine distributer type.

The car cruises well and starts up great except it feels like it is dumping to much fuel after it warms up and you try to restart as you can see the mat,f in red once warm. It seems to run strong when it’s in the red though. The problem is that it has an issue with cutting out under heavy acceleration. I’m curious if it has something to do with the fuel sump and not having an electric fuel pump in tank. The sump runs through the mechanical fuel pump on side of engine. I have a gauge on side of Holley sniper efi and it reads good after starting but curious if it’s not getting enough fuel under load. Has anyone had this issue or know much about Eldebrock fuel sump on Holley sniper efi?

I purchased a 71 Chevelle with a 454 bored to 468 with Holley sniper efi. It has the Holley spark and hyper spark ignition. Still need to determine distributer type. ​

I purchased a 71 Chevelle with a 454 bored to 468 with Holley sniper efi. It has the Holley spark and hyper spark ignition. Still need to determine distributer type.