carb

["High Tech Coatings" <rick@hightechcoatings.com>]

when a Holley carb runs rich 90% of the time the power valve is the problem,
The rest of the time it is jetting. If the car passed on the carb before
then the power valve is more than likely the culprit. Power valves are not
included with rebuild kits, they must be ordered separately. to get the
right one, you look at engine vacuum at cruise and order one that has a
rating 1.5-2 down from that reading
Rick R