Expert: Gary Malone - 10/19/2009

Question
I have 74 vette 350 motor   with a 750 holly carb on it how is the  
best way to adjust the 2 screw to make it to run
better thanks.

Answer
First remove the small screw in the bowl then loosen the nut on the screw on top of the bowl start the car and adjust the screw until gas barely runs out of the hole on the side tighten the nut reinstall the screw in the side.
the two fuel mixture screws on a holley are on the sides of the front metering block(behind the bowl) start the car let it warm up and one at a time screw them in until the car runs rough then back it out 1/2 a turn.