Best Top 10 Bolt Ons For a 318

Economy???

My dad had a 76 Charger with a stock 360 2 bbl that got 20 mpg on the highway... 360's can get good economy if you build them right....
Many years ago, we traveled across South Dakota, Wyoming, Colorado, Nebraska, Iowa on a big loop vacation in a '72 Polara with a stone-stock factory 360 2bbl. We averaged about 17 mpg on the road running right along.