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help with compression
Hello there. I am working on my dad's 65 Bird. It has a 390 4bbl. What is an acceptable amount of piston compression. I have 2 cylinders with pretty low compression compared to the others. I just want to know what is acceptable. I have as follows;
cylinder#1 55 psi
cylinder#2 95 psi
cylinder#3 90 psi
cylinder#4 90 psi
cylinder#5 70 psi
cylinder#6 90 psi
cylinder#7 110 psi
cylinder#8 100 psi
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