I would expect vacuum advance not working, accelerator pump bad or power jets stuck down.
Quadrajets are super simple.
Pull the hose off the vacuum advance, engine should sound noticeably blah and should be vacuum on hose. You should see a good squirt into the lower part of carburetor front venturi's when you pump it and feel the resistance. You can take a small screwdriver down into the small tube on top and test the power valve, spring should hold it up and able to press down.
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Today's Featured Article - A Belt Pulley? Really Doing Something? - by Chris Pratt. Belt Pulleys! Most of us conjure up a picture of a massive thresher with a wide belt lazily arching to a tractor 35 feet away throwing a cloud of dust, straw and grain, and while nostalgic, not too practical a method of using our tractors. While this may have been the bread and butter of the belt work in the past (since this is what made the money on many farms), the smaller tasks may have been and still can be its real claim to fame. The thresher would bring in the harvest (and income) once a y
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