I am thinking its the carb too. One thing i have noticed is that when i turn the adjustment screws on each side of the carb nothing happens. In the past wheni did that the motor would die.
THAT is a classic sign of a very rich Holley. If you can (gently) bottom out one or both of the idle screws - and it will still idle you need to get into the carb.
Which Holley do you have? There will be a number stamped into the air horn that is 4 digits, perhaps with a - and some more numbers. like "3310-6" That will tell us which unit you actually have.
A complete rebuild kit with a new power valve and all the gaskets is less than 50 bucks. Buy a genuine Holley kit - most of the chain stores will have one.
