erskine

iTrader: (5)

i was wondering the best way to go about this since it has 4 blades. im having high IAC counts on a big cam car

farmington

iTrader: (14)

look and see if it has an adjustable stop on it. when I used to run carbed cars, instead of drilling you could so slightly tweek a stop screw on the bottom of the Holley baseplate and it worked as well as drilling.

70LS1Nova

what TB do you have? My fast has screws to crack the blades as opposed to driliing them.

1BAD98LS1

iTrader: (33)

I just had this issue with my car as it has a big hyd. cam and an edelbrock 4150 tb. I adjusted the idle screw as mentioned above and also tweaked the tps sensor to get the car to idle correctly at a desirable rpm range. Haven't had any issues since.

erskine

iTrader: (5)

I have the fast 4150. I tried adjusting the blades but tps isn't happy about it. I was told by patg to drill the blades. Cause I love open the blades and iac stay maxed