Not Ranked
Hey Don,
In the end you have to do what you feel good about and I appreciate that fact. Just a couple of items to throw into the mix for you. I ran copper gaskets for years on my supercharged engines but have been using Cometic layered gaskets with great luck and highly suggest you check them out. They will supply about any compressed thickness you need. I run them in an alum BBC with 11.72 compression on pump gas and 39 degrees total timing. I have a knock sensor to be sure but no pre-ignition problems at all.
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