The Monterey Historics racing time machine at Laguna Seca started way back on Saturday, with chain-driven specials tearing up their skinny tires at breakneck speeds. As the afternoon marched on, so did the racing chronicle. Wire wheels gave way to magnesium alloys. Narrow tires drifted towards fat. Lumbering mills twisted into the shrill whine of maximum rpm as racing moved from chains and sprockets into the 1965-1972 FIA Manufacturing Championship cars in the last laps of the day. Sunday's action promises more Indy cars, some Formula racers, and an event closing IMSA GT session of Porsche turbo boxer vs. Chevy V8 Monza goodness.

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