This is interesting. Jerry I knew Chevy had cam problems, but had never read anything about why. My EGR equipped 350 is running rough and now I'm wondering if that may explain it. I was already going to spend time troubleshooting it today.
No one has mentioned the compression differences. Cylinders 2, 3 and 6 are a bit lower than the others. I thought a 10% difference highest to lowest was considered enough to cause concern. The 20 psi difference 150 to 130 sure exceeds that.
Could the rough idle be in part the result of the low compression in three cylinders?
