Autos have "Flex-plates" instead of flywheels. Not a dumb question. Pretty much the only thing the flex plate does is allows the starter motor to turn the crank. There's not too much you can do to make an auto more 'efficient' other than increasing the line pressure. Anything else you do to it to increase its strength will add more weight and/or spinning mass. But if you just do stronger spring upgrade and increase the line pressure, you'll get more efficiency out of the auto transmission, but your shifts will be harder, not smooth.
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2002 Corvette Z06 - Totaled
2003 Corvette Z06 50th Anniversary
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