I'd like to do a tune up on my 66, 327/300. The manual indicates that timing should be set at 6 deg. advance. Given that I'm burning 93 oct. unleaded gas, does that change the timing requirements? The car has been sitting for some time, and seemed to run fine before I began the other work, although it got very poor mileage, 9-10 mpg. Also should timing be checked at other than idle rpm? Thanks
John
John
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