Smallblock efficiency or How to have your cake and eat it too

ir3333 said

Wouldn't it be nice to get our old 60's classics up to 30 mpg like the modern muscle cars?

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They can with double overdrives,cylinder cancelling, fuel injection, variable valve timing and the like. Hemi Demon Challengers don't get 30 mpg in drag mode either. More like 3 mpg.