Quote:
Originally Posted by Tom Vaught
I remember the 60s Sunoco 260 fuel being 102 or 104 octane and the 280 Sunoco fuel being around 108-110 octane. Course this was leaded fuel too. And that was a RESEARCH Octane Number
Info:
"A numerical representation of the ability of a fuel to resist knocking when ignited in the cylinder of an internal-combustion engine. The octane number of a given fuel is determined by comparing the amount of knocking that fuel causes when combusted with the amount of knocking caused by two standard reference fuels, isooctane (which resists knocking and has an octane number of 100) and heptane (which causes knocking and has an octane number of 0). The octane number is then assigned as the percentage of isooctane required in a blend with normal heptane to match the knocking behavior of the fuel being tested."
Tom Vaught
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Yep, I worked at a sunoco station in Miami Fla. back in '74-75, Had the sunoco "280" the pumps had the dial that you could choose 280 down to 210 or something... I remember we used to go out and find the Cadillacs or big Lincolns and siphon/steal (late at night) the gas out of them ( we would smell the inlet to make sure it was the "purple stuff"!) for my 1970 gto with 12 1/2 to 1 compression "pop up pistons"! We knew that the "rich" people used the 280 in their big cars then! I was only 18 and didn't know better.. yea I did some wrong things when I was young.. I remember my '70 goat got a dead battery one night and the girls i was with went out and "borrowed" a battery from someone down the street so we could go out and DISCO! Ha!
