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Old 08-04-2017, 09:34 AM   #1
53chevyforever
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Join Date: Jul 2010
Location: texas
Posts: 180
Spark Plugs What is wrong?

Ok...really does not miss...just runs ragged. These plugs are in order as
I took them out. From left top..1 3 5 7 and top right 2 4 6 8. Three of the plugs look like have never been run. Why are the center plugs that clean?
I have tried two diff carbs...two hei's and two sets of wires that I know run well.
Also...adjusted valve lash and it does not have a flat cam. The 350has a small cam...and 15 inches of vacuum. Pcv valve is good and has a baffle. Any ideas?
I guess next is to pull intake manifold...?
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