The 2280 carburetor number will be stamped on the main body on the fuel
inlet side. You are looking for the LIST number. You may have something
like R-7980A. 7980 is the LIST number and is all that is necessary in
terms of finding the correct carburetor kit.
Holley 2280 Power
The Holley 2280 has two (some only have 1) power valves located in the
bottom of the float bowl. One is a mechanical and the other is the
vacuum. Be sure to keep each power valve assembly together because they
work together and are different. Each valve may have a calibration
number stamped on the side. Write down the number for each. The vacuum
power valve is located on the throttle lever side. Obviously the
mechanical power valve is located on the opposite side, or vacuum kick
side. The mechanical valve needle is longer than the vacuum power valve.
If you have problem when at part, or full throttle, the power valves
can be one suspect. Review the information above.
There is a check ball, then check weight that is placed in the main
discharge underneath the venturi cluster.
Questions & Answers
I have a problem adjusting my holley 2280 on my 1987 dodge
d150. It has a 318. I bottomed out both mixture screws and its still
backfiring and running a little rich. I need help bigtime. Will this
hurt my 318? Should i turn them both out 2 turns? I need help...
This is an indication of a carburetor needing to be rebuilt, or if you
just rebuilt it, something was installed, or adjusted incorrectly and
it is very hard on the engine.
Watch Our Rebuild Videos for the