Reference " The Idaho Corvette Page' , Corvette Articles, Gasoline Digest, " What you need to know about fuel for Corvettes and other high performance cars " written by Hib Halverson. Will answer some of the questions being asked.
In the 2nd section of the article is a chart for mixing 76 Competition 100 Racing Fuel with 76 High performance 91 Gas in various ratios to obtain the desired fuel mix.
Included on the site are articles that apply to any high performance autos
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