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My brothers hotrod-6 69 Valiant was always 'on'... he needed to flog it to go fast... and that thing had utterly atrocious gas-mileage. It even had 3.21's and an OD 833...




that's the driveline my duster has, with the stock slant 6...even foot to floor for a whole tank, I've never gotten worse than 19mpg with it in the 21 years I've had the car, and typically get 24-26mpg a tank in mixed driving...but passing on a 2 lane road does take a little planning, especially compared to my '11 charger....

I really would love to try a stock 5.7L in my duster behind that driveline....bet mileage would be about the same, but it would probably be a high 12 second car...


1976 Spinnaker White Plymouth Duster, /6 A833OD
1986 Silver/Twilight Blue Chrysler 5th Ave HotRod **SOLD!***
2011 Toxic Orange Dodge Charger R/T
2017 Grand Cherokee Overland
2014 Jeep Cherokee Latitude (holy crap, my daughter is driving)