So, if you wanted to build that big block Caddy into a max MPG machine, and get about 28 MPG, what would it take?
Proposed Highway Plan for best Miles Per Gallon or Running Good and Lean
2:56 highway gears
Big Grunt Low RPM cam
Lowered 1968 Caddy DeVille with improved aero package
Solar Panels on the roof and rear deck
Super T-10 Four Speed
I already have a low ratio rear, 2.50:1 in a Currie 9 inch....... And the old Caddy Deville was 5300 lbs title weight, so my Elco is likely in the 4200 lb range... Maybe why the gas mileage is better !!