Fuel problem I think? Going Crazy

[stanger66]

i wish i had a tach and i check for vaccuum leaks found nothing
I have a 1 barrell
Example: If i put it the floor it will die when i let off the gas and cant get it to stay on with playing with gas pedal, this will happen with in 1/8 a mile floored.
If take off with 1/4 to 1/2 thottle it will stall out the same.
When not driving it sitting in parking spot i can floor it all day no problem and will never stall. I would figure it would happen no matter what i did.