#5 & 8 intake ports are open to each other. Most of the time the PCV hose comes off the back of carb right above this port. If you are using valve covers without a baffle under your PCV valve it could be pulling oil into carb which the biggest part would go to 5 & 8. Just a thought.
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56 Chevy Bel-Air 2dr. HT (purchased new)
71 Chevy Cheyenne SWB PU (502HO)
65 GMC short bed step--work in progress and my gofer
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