Re: HELP PLEASE plug? problems with my 69 C10
I'm sure some will tell you that using a vacuum gauge is the best way to set the timing. I don't believe Holly's are as sensitive to fuel pressure as an Edelbrock. Maybe one of the Holley guys will chime in on how to set the mixture screws properly. If a shop had your motor out and did all of that work how did they set the timing when they re-installed it?
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