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Thread: Start a Debate
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10-02-2006 #1
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My C6 (rated 400 hp) used to average 30-31 mpg @ 70 mph on the highway when it was stock. With the supercharger, cam, headers (now approx 635 hp) it still pulls down 26 mpg with a 3.90 gear.
Most stock LS1s with 6-speeds see ~30 mpg, especially with longtube headers and no catalytics to restrict them.
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