Interesting compression test numbers
I ran a compression test on the 396 tonight thinking I would find a burnt or dropped valve. But the results were interesting. The passenger side readings were 184, 184, 186, 185. All nice and close together. The driver's side readings were 200, 196, 199, 195. A little more spread but not bad at all. It's the difference of 10-15 psi between each side that makes me wonder. I'm guessing one side either has a different head gasket or the head was shaved more resulting in higher compression. So now I'm still trying to guess at what has caused my slight miss. The engine shakes a little when you rev it and it starts to make the miss sound. I don't think it's an exhaust leak and all the spark plugs look very similar in color. More investigation is needed at this point.
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69 Z28 JL8 4 wheel disc brakes - being restored
09 Silverado Z71
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